Frontier vs Allegiant 2026: Lowest Base Fare vs the Lowest Cancel Rate

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.

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 the carry-on pricing gap 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?

Allegiant charges $35 for a carry-on at booking versus Frontier’s $59, saving $48 round trip on carry-on fees alone.

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 charges $59 for a carry-on when added at booking. That price climbs at check-in, at the counter, and at the gate, where it can exceed $100. Allegiant charges $35 at booking for the same add-on. That is a $24 gap on a round trip ($48 total), which is larger than the fare difference on many competing routes.

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 14x18x8 inches. Allegiant’s is 16x15x7 inches. Both are small. 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. This is where Allegiant’s pricing gets complicated. Allegiant uses dynamic route-based pricing for checked bags, with rates ranging from $15 to $70 each way depending on the route, season, and when you pay. The standard rate is around $50, and it jumps to $75 at the airport. Frontier uses dynamic pricing, typically $47 to $63 at booking and higher at check-in or the airport. On many routes, Allegiant and Frontier are closer in price than they used to be.

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

Allegiant / $35 vs $59 at booking

Winner: carry-on size

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

Winner: checked bag price

Allegiant / dynamic pricing starts lower on most routes

Winner: checked bag weight limit

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

Winner: personal item size

Roughly tie / different shapes, similar volume

Does Frontier or Allegiant fly to more destinations?

Both serve roughly 115 to 128 airports, 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 115 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’s fleet is a mix of A320 family aircraft, with some older MD-80 series still in service during peak seasons. 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 0.44 percent cancellation rate versus Frontier’s 1.26 percent. On-time rates are close at roughly 75 percent each.

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

On-time rates. Allegiant’s 2025 on-time arrival rate was 75.07 percent. Frontier’s full-year rate was approximately 74 percent, though monthly performance varied widely (Frontier posted 89.3 percent in October 2025 before dropping in winter months). Both are below the industry average of roughly 78 percent and well behind leaders like Delta (80.27 percent) and Southwest (79.92 percent).

Cancellations. This is where Allegiant’s 2025 numbers stand out. Allegiant’s cancellation rate dropped to 0.44 percent, one of the lowest in the US airline industry. That is a dramatic improvement from its historical average of 3.21 percent, which previously made Allegiant one of the most cancellation-prone airlines in the country. Frontier’s 2025 cancellation rate was approximately 1.26 percent, nearly three times higher than Allegiant’s.

For context, Allegiant ranked second overall in the Wall Street Journal’s 2025 airline rankings, ahead of every legacy carrier except Alaska. Frontier tied for last with American Airlines. 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 0.44 percent cancellations addresses what used to be the biggest risk of flying the airline.

Winner: on-time arrivals

Allegiant / 75.07% vs ~74%, marginal

Winner: cancellations

Allegiant / 0.44% vs 1.26%, significant

Winner: rebooking options after disruption

Frontier / higher frequency, more daily flights

Does Frontier or Allegiant have more legroom?

Allegiant offers approximately 30 inches of seat pitch versus Frontier’s 28 to 29 inches, giving Allegiant a slight edge in standard economy.

Neither airline is competing on comfort, but the numbers are not identical.

Standard economy pitch. Allegiant offers approximately 30 inches of seat pitch. Frontier offers 28 to 29 inches, among the tightest in US aviation. That one-to-two-inch gap is noticeable on flights over two hours.

Extra legroom. Frontier’s Stretch seats offer 33 to 38 inches of pitch, a meaningful upgrade from the 28-inch base. 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

Allegiant / 30" vs 28-29"

Winner: extra legroom

Frontier / Stretch at 33-38"

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’s bundles are generally less expensive, driven by its $35 carry-on fee versus Frontier’s $59 and lower route-based add-on pricing.

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

Frontier bundles. The PERKS bundle ($69) includes a carry-on, checked bag, and seat selection. The WORKS bundle ($99) adds priority boarding, refundability, and free changes. On a round trip, The WORKS costs $198 on top of the base fare.

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 comparable round trip where both airlines fly the same route, Allegiant’s bundled total is often lower despite a higher base fare. The cheaper carry-on ($35 vs $59) drives most of that difference.

Winner: bundle value

Allegiant / lower add-on pricing on most routes

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 cheaper carry-on fee ($35 vs $59 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 (0.44 percent in 2025)
• You prefer slightly more legroom in standard economy (30” vs 28-29”)
• You want lower checked bag pricing on most routes plus a 50-pound 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 lower add-on pricing (especially the $35 carry-on versus Frontier’s $59) 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. If you are also considering Spirit as a third ULCC option, our Spirit vs Frontier comparison covers the Big Front Seat upgrade, Wi-Fi, and reliability differences.

The biggest surprise in 2026 is Allegiant’s reliability turnaround. An airline that historically cancelled 3 percent of flights dropped to 0.44 percent and finished second in the Wall Street Journal’s overall rankings. If your concern about Allegiant was cancellations, the 2025 data suggests that concern is outdated.