Frontier vs Allegiant 2026: Which Budget Airline Wins?

Fees, policies, and figures in this comparison reflect what we verified as of Sep 2026 and can change afterward. Our live tools and the data behind them are re-verified more often than the written comparison.

Most airline comparisons pit a budget carrier against a legacy airline and the verdict boils down to comfort versus price. This is not that comparison. Frontier and Allegiant are both ultra-low-cost carriers that strip everything from the base fare and charge for every add-on. They use the same aircraft family (all-Airbus A320), charge for carry-on bags, and rank near the bottom of most airline quality surveys. The question is not which airline is more comfortable. Neither is. The question is which one serves your route at a lower total cost and gets you there without a cancellation.

The answer depends almost entirely on where you live. Allegiant’s business model is built around connecting small and mid-size American cities directly to vacation destinations. If you live in Bellingham, Ogden, or Punta Gorda and want a nonstop to Las Vegas or Orlando, Allegiant is often the only airline offering that route. Frontier operates more like a national low-cost carrier, competing directly with Delta, United, and American on high-traffic routes out of Denver, Orlando, Las Vegas, and other major hubs. On routes where both airlines fly, Frontier’s base fare is usually lower but Allegiant’s add-on pricing (especially for carry-on bags) can make the total trip cost competitive.

Is Frontier or Allegiant better in 2026?

For most travelers Allegiant wins on the costs that quietly add up: the 50-pound industry-standard checked-bag cap (Frontier still stops at 40), and a far lower cancellation rate (0.47 percent versus 1.77 percent, US DOT full-year 2025). Frontier counters with lower average base fares and head-to-head service in major metro markets. If you live in a small or mid-size city and want a nonstop to a vacation spot, Allegiant is often the only airline flying it; if you fly major routes and pack light, Frontier’s base fare usually wins. Neither airline is comfortable and neither includes a carry-on, so the decision is pure total-cost-plus-reliability math.

What We Looked For

• Total trip cost, because the base fare is meaningless on a ULCC without accounting for bag fees, seat selection, and bundles
• Bag fees and weight limits, including how each airline prices carry-ons and Frontier’s non-standard 40-pound checked bag cap (Allegiant follows the 50-pound industry standard since 2023)
• Route strategy, the most important difference between these two airlines and the one most travelers overlook
• Cancellation rates, because Allegiant’s 2025 improvement is one of the biggest reliability stories in US aviation
• On-time performance, where both airlines trail the industry but the gap between them is small
• Loyalty programs, neither of which is a reason to choose one airline over the other

Which airline charges less for bags, Frontier or Allegiant?

Neither airline publishes a flat carry-on fee: Allegiant charges $10 to $75 per segment depending on route and timing, and Frontier prices its carry-on dynamically. The clearer gap is checked-bag weight, where Allegiant allows 50 pounds to Frontier’s 40.

Neither airline includes a carry-on in the base fare. You get a personal item and nothing else. Everything beyond that is an add-on, and the pricing differs more than you might expect between two airlines in the same category.

Carry-on fees. Frontier prices its carry-on dynamically in its Bag Price Checker, cheapest when added at booking and most expensive at the airport. Allegiant prices the same add-on by route and by when you buy it, from $10 to $75 per segment, also cheapest at booking. Both are route-dependent, so price the bag for your actual flight before assuming either one is cheaper.

Carry-on dimensions. Frontier allows 24x16x10 inches with a strict 35-pound weight limit that agents enforce with scales at the gate. Allegiant allows 22x16x10 inches with no published weight limit. Frontier’s larger box is 2 inches longer, but the weight limit catches travelers who pack densely. If your bag weighs 36 pounds, you will pay an overage at the gate on Frontier and board without issue on Allegiant.

Personal item. Frontier’s free personal item maxes out at 18x14x8 inches. Allegiant’s is 18x14x8 inches, the same box. A standard Jansport backpack fits on both airlines, but anything larger risks a gate-check fee. Both airlines actively enforce personal item sizing.

Checked bags. Neither airline publishes a flat checked-bag fee. Allegiant prices checked bags by route and per segment, cheaper when you pre-purchase. Frontier shows its price only in the Bag Price Checker, cheaper when added at booking and higher at the airport. On any given route, the two can land close together, so compare the quote for your flight.

The 40-pound trap is a Frontier-only issue in 2026. Allegiant raised its standard checked bag cap from 40 to 50 pounds in March 2023, putting it back in line with Delta, United, American, and Southwest. Frontier still holds the line at 40, which means a bag packed to the typical 50-pound legacy-carrier limit clears free on Allegiant but triggers an overweight surcharge on Frontier. This is a meaningful and underrated differentiator between the two ULCCs, and it especially matters for travelers switching from a legacy carrier who haven’t been told the rule changed.

For details on your specific bag, use our carry-on size checker or see our guide to avoiding checked bag fees.

Winner: carry-on price

Tie / both priced by route and timing; Allegiant $10-75 per segment, Frontier unpublished

Winner: carry-on size

Frontier / 24x16x10 vs 22x16x10; Frontier is 2 inches longer

Winner: checked bag price

Tie / both priced dynamically by route, no flat published fee

Winner: checked bag weight limit

Allegiant / 50 lb industry standard vs Frontier's 40 lb cap

Winner: personal item size

Tie / identical 18x14x8 in

Does Frontier or Allegiant fly to more destinations?

Both serve roughly 120 to 130 places, but Frontier targets major metros while Allegiant connects small cities to vacation destinations.

This is the section that matters most, and it is where Frontier and Allegiant stop looking like interchangeable budget airlines.

Frontier’s model is high-frequency service between major metro airports. Denver (DEN) is the closest thing to a hub, but Frontier runs significant operations out of Orlando (MCO), Las Vegas (LAS), Atlanta (ATL), Philadelphia (PHL), and Miami (MIA). Frontier competes directly on routes that Delta, United, and American also fly, using lower fares to pull price-sensitive travelers off the legacy carriers. Approximately 120 destinations, most of them primary airports in large and mid-size cities.

Allegiant’s model is the opposite. Allegiant connects small and mid-size cities to a handful of vacation destinations, using secondary and regional airports that other airlines ignore. The airline operates from cities like Bellingham (BLI), Ogden (OGX), Punta Gorda (PGD), Sanford (SFB), and Mesa (AZA) rather than Seattle, Salt Lake City, Fort Myers, Orlando, or Phoenix. Flight frequency is low (often 2 to 4 times per week on a given route rather than daily), and the network is designed for leisure travelers who will plan around the schedule.

This means the airlines rarely compete head to head. If you live in a major metro area, Frontier is the ULCC option on your routes. If you live in a smaller city or near a regional airport, Allegiant may be the only nonstop to your vacation destination. The route strategy determines which airline you even have the option of flying.

Fleet. Both airlines operate all-Airbus fleets. Frontier flies A320neo, A321neo, and older A320ceo aircraft. Allegiant operates an all-Airbus A320-family fleet, having retired its older MD-80 jets in 2018. Neither airline operates widebody aircraft or has international long-haul service.

Winner: major city routes

Frontier / competes directly on high-traffic routes

Winner: small city nonstops

Allegiant / serves regional airports others ignore

Winner: flight frequency

Frontier / daily or multi-daily on popular routes

Winner: unique routes

Allegiant / nonstops from secondary airports that no other carrier flies

Is Frontier or Allegiant more reliable?

Allegiant is more reliable in 2025, with a 0.47 percent cancellation rate versus Frontier’s 1.77 percent (US DOT). Both trail the industry on on-time arrivals.

Both airlines trail the industry on on-time arrivals, but the cancellation story has diverged sharply.

On-time rates. Allegiant and Frontier both trailed the industry on on-time arrivals in 2025, with Frontier ranking last of 10 and Allegiant 7th (US DOT full-year 2025). Both finished well behind leaders like Delta (80.90 percent) and Southwest (77.04 percent).

Cancellations. This is where Allegiant’s 2025 numbers stand out. Allegiant’s cancellation rate was 0.47 percent, the lowest of any US carrier in 2025. That is a dramatic improvement from 1.72 percent in 2024, when Allegiant was among the more cancellation-prone airlines. Frontier’s 2025 cancellation rate was 1.77 percent (US DOT full-year 2025), nearly four times higher than Allegiant’s.

For context, among the ten largest US carriers in the US DOT full-year 2025 data, Allegiant cancelled the smallest share of flights and Frontier the second largest, ahead of only American. That gap is significant for a traveler choosing between two ULCCs.

Why the improvement matters. Allegiant’s low-frequency schedule (a few flights per week on most routes) means a cancellation is more damaging than on a high-frequency airline. If your Monday Frontier flight from Denver cancels, there is likely another Frontier flight the same day. If your Wednesday Allegiant flight from Punta Gorda cancels, the next one might not leave until Saturday. Allegiant’s drop to 0.47 percent cancellations addresses what used to be the biggest risk of flying the airline.

Winner: on-time arrivals

Allegiant / both below average; Frontier was the most-delayed major US carrier in 2025

Winner: cancellations

Allegiant / 0.47% vs 1.77% (US DOT 2025)

Winner: rebooking options after disruption

Frontier / higher frequency, more daily flights

Does Frontier or Allegiant have more legroom?

Allegiant’s standard seats are around 30 inches of pitch, while Frontier publishes no pitch figure at all, so there is no published margin to call in standard economy.

Neither airline is competing on comfort, and only one of them gives a number.

Standard economy pitch. Allegiant offers approximately 30 inches of seat pitch. Frontier’s seating page says only that its Standard seats “come with standard legroom and space”, with no inch figure for its all-Airbus A320 family fleet. Check the seat map for your flight if an inch matters to you.

Extra legroom. Frontier’s Premium seats and the top-tier UpFront Plus rows (with a guaranteed empty middle seat) are sold as extra legroom, but Frontier gives no figure. Allegiant offers Legroom+ seats with additional pitch, though the exact increase varies by aircraft configuration. Both are paid upgrades.

Seat width. Both airlines use standard A320-family seating at approximately 17.8 inches across. No meaningful difference.

Wi-Fi and entertainment. Frontier offers streaming Wi-Fi for purchase and free on-demand entertainment through the Frontier app. Allegiant does not currently offer in-flight Wi-Fi on most aircraft. Neither airline has seatback screens. If you need to work during the flight, Frontier has the advantage.

Power outlets. Frontier has power outlets and USB ports on newer A320neo aircraft. Allegiant’s availability varies by aircraft age.

Winner: standard legroom

Not published / Allegiant about 30 in; Frontier publishes no pitch

Winner: extra legroom

Not published / neither airline publishes an extra-legroom pitch

Winner: Wi-Fi

Frontier / available on most flights

Winner: seat width

Tie / both ~17.8" on A320 family

Is FRONTIER Miles or Allways Rewards the better loyalty program?

FRONTIER Miles is more developed, with status match offers and the GoWild Pass. Neither program is a compelling reason to choose one airline over the other.

Neither ULCC has a loyalty program worth building a strategy around, which is itself useful information.

FRONTIER Miles is the more developed program. Points are earned based on fare price and redeemed for flights. Frontier occasionally runs status match promotions (the most recent offered Elite Gold status for $69), which include benefits like a free carry-on, free seat selection, and priority boarding. The program also has a bundled subscription model (GoWild! All-You-Can-Fly Pass) that starts around $599 per year for domestic flights, appealing to extremely flexible travelers who can fly on short notice.

Allways Rewards is Allegiant’s loyalty program, earning 1 point per dollar spent. The program is newer and less developed, with limited elite benefits. Points can be redeemed for flights, but the earning rate and redemption value trail most competitors. Allegiant does offer an Allegiant+ membership (around $99 per year) that bundles bag discounts, priority boarding, and other perks for frequent flyers.

If loyalty earning is a major factor in your airline choice, neither of these airlines is the right pick.

Winner: loyalty program depth

Frontier / more tiers, status match offers, GoWild! pass

Winner: paid membership value

Depends on travel frequency / GoWild! for very flexible travelers, Allegiant+ for 3-4 trips per year

Is a Frontier or Allegiant bundle cheaper overall?

Allegiant prices its bundles per route while Frontier uses fixed tiers, so which one is cheaper depends on your route.

Since both airlines strip everything from the base fare, the bundle price is the more honest comparison.

Frontier bundles. Frontier replaced its old PERKS and WORKS bundles with the New Frontier fare structure: Basic, Economy, Premium, and Business. Basic is the bare base fare with a personal item only. Economy adds a carry-on plus the personal item. Premium builds on Economy with Board First (Group 1) for better overhead-bin odds and no change or cancel fees. Business is the top tier, bundling the carry-on, personal item, two checked bags (50 pounds each, via the bundled extra-weight allowance), and an UpFront Plus seat with a blocked middle. Each step up rolls in more extras for a fixed price rather than charging à la carte.

Allegiant bundles. The Deluxe bundle varies by route but typically runs $30 to $60 and includes a carry-on, checked bag, and seat selection. The Total bundle adds priority boarding and trip insurance for $50 to $80. Allegiant’s bundles are generally less expensive because they are priced per route rather than as a fixed national rate.

On a round trip where both airlines fly the same route, price both bundles side by side. Allegiant’s per-route pricing can undercut Frontier’s fixed tiers, but it can also run higher on a busy route.

Winner: bundle value

Depends on route / Allegiant prices bundles per route; compare on your route

Winner: bundle predictability

Frontier / fixed national pricing, easier to compare

Who Should Pick Frontier

• You live near a major metro airport where Frontier competes with legacy carriers
• You want the lowest possible base fare and are willing to fly with only a personal item
• You value daily flight frequency and want rebooking options if plans change
• You travel enough to consider the GoWild! All-You-Can-Fly Pass
• You want Wi-Fi available during the flight
• You carry a roller bag longer than 22 inches that fits Frontier’s 24x16x10 but not Allegiant’s 22x16x10

Who Should Pick Allegiant

• You live in a smaller city or near a regional airport that Allegiant serves with nonstop vacation routes
• You want a carry-on that can cost as little as $10 per segment when added at booking
• You are planning a leisure trip to Las Vegas, Orlando, Myrtle Beach, or another Allegiant focus city
• You can plan around 2-to-4-times-per-week flight schedules
• You want the airline with fewer cancellations (0.47 percent in 2025, the lowest in the US)
• You want a rough idea of your seat pitch before you book (Allegiant’s standard seats are around 30 inches; Frontier gives no figure)
• You want a 50-pound checked bag weight limit (Frontier still caps at 40)

The Bottom Line

Frontier and Allegiant look similar on paper. Same aircraft family, same fee-for-everything model, same bottom-tier reputation. The actual difference is geographic. Allegiant built a business around routes that no one else flies, connecting small American cities to vacation destinations at low frequency. Frontier built a national network that competes with legacy carriers on major routes at high frequency. Your home airport determines which airline is even an option.

When both airlines do serve the same market, Allegiant’s 50-pound bag allowance and its dramatically improved cancellation rate make it the better value on a per-trip basis. Frontier’s advantages are frequency, Wi-Fi, and a more developed loyalty program, none of which matter if you are a once-or-twice-a-year leisure traveler. Spirit used to be the third ULCC in this conversation, but it ceased all operations on May 2, 2026 and entered Chapter 7 liquidation, so Frontier and Allegiant are now the two ULCCs left standing on most routes. Our Spirit vs Frontier comparison is kept as a historical reference on how the three once stacked up.

The biggest surprise in 2026 is Allegiant’s reliability turnaround. An airline that cancelled 1.72 percent of flights in 2024 dropped to 0.47 percent in 2025, the lowest of any large US carrier in the US DOT data. If your concern about Allegiant was cancellations, the 2025 data suggests that concern is outdated.