Budget airlines can shave hundreds from airfare — but only if you know the fine print. In 2026 the U.S. low-cost landscape is still useful for short trips and light packers, yet fees, route networks and policies have shifted enough that the cheapest headline fare isn’t always the best deal. This guide walks through the major budget carriers, compares typical fees, and gives a practical checklist so you can pick the lowest real cost for your trip.
Top US budget airlines in 2026 — quick snapshot
- Who this guide covers: the national and regional low-cost and ultra-low-cost carriers most travelers will encounter.
- When to favor a budget carrier: short nonstop routes, travel with only a personal item, or when a carrier offers the only direct flight to your destination.
- When to avoid them: long flights where comfort and flexibility matter, trips with checked luggage, or itinerary chains with tight connections.
Quick comparison table (high-level)
| Airline | Typical headline fare profile | Carry-on allowance | Best for |
|---|---|---|---|
| Frontier | Ultra-low headline fares; many add-ons charged separately | Carry-on often an extra fee | Travelers who pack only a personal item and book add‑ons in advance 1 |
| Allegiant | Low fares on leisure routes from smaller cities | Carry-on usually charged | Vacation routes from underserved cities 1 |
| Southwest | Low-cost model with customer-friendly rules; fee structure changed recently | One carry-on + personal item free; checked bag fees now apply 1 | Travelers who value flexible change/cancellation terms 1 |
| JetBlue | Mid-tier budget with more amenities (Wi‑Fi, snacks) | Basic fares sometimes limit to personal item | Travelers wanting a balance of comfort and lower cost 1 |
| Breeze | Newer low-cost carrier serving secondary markets; no change fees | Varies by fare bundle | Direct flights from secondary cities; flexible change policy 1 |
| Avelo | Small regional low-cost with leisure-focused routes | Carry-on and checked-bag fees apply | Travelers near an Avelo base flying leisure routes 1 |
How to read the fee lists: what to watch for
– “Headline fare” is rarely the final price. Budget carriers often display low base fares then charge for carry-ons, checked bags, seat assignments, and priority boarding.
– Timing matters. Buying a bag or seat at booking is usually cheaper than adding it at check-in or the gate.
– Route and market differences. Fees can vary by route, fare class and how far in advance you buy; use the airline’s booking flow to see the full cost before payment 1.
In-depth carrier breakdowns
Frontier Airlines
– Who they are: An ultra-low-cost carrier known for aggressive base fares on many domestic routes.
– What to expect: Very low headline fares but a la carte pricing for carry-ons, checked bags, and most seat selections. Advance purchase is strongly recommended to avoid steep gate fees 1.
– Typical fee patterns: Carry-on and checked-bag fees can range substantially depending on when and where you buy them; gate prices are much higher than online purchase prices 1.
– Best for: Solo travelers on short nonstops who can live with only a personal item.
– Watch out for: Add-ons like carry-on and seat fees that can wipe out apparent savings.
Allegiant Air
– Who they are: Focus on leisure routes connecting smaller cities to vacation hubs.
– What to expect: Limited schedules but low fares on the routes they operate. Fees apply for bags and seats, often varying with route and timing 1.
– Best for: Travelers in smaller communities where Allegiant provides rare nonstop service.
– Watch out for: Few schedule options; cancellations or delays can force inconvenient alternatives.
Southwest Airlines
– Who they are: A legacy low-cost model with customer-first policies, though some advantages have changed recently.
– What to expect: Southwest historically stood out for two free checked bags; policy updates mean checked-bag fees are now part of their pricing for many passengers, while carry-on rules remain generous. Southwest’s change and cancellation policy remains one of the most flexible in the U.S. market 1.
– Best for: Travelers who value flexibility and predictable customer service (no change fees, easy flight credit).
– Watch out for: The loss of the universally free checked-bag benefit reduces the gap between Southwest and other carriers’ total costs.
JetBlue
– Who they are: Positioned above ultra-low-cost carriers with more cabin comfort and onboard amenities.
– What to expect: A “Blue Basic” or bare-bones fare option exists; that tier often limits you to a personal item unless you pay to upgrade. Standard JetBlue economy fares include more legroom, free Wi‑Fi and complimentary snacks, which can matter on longer flights 1.
– Best for: Travelers who want a lower-cost ticket but still expect some onboard comforts and better legroom.
– Watch out for: The cheapest JetBlue fares can still add fees if you need a carry-on or seat selection.
Breeze Airways
– Who they are: A newer airline focused on underserved city pairs and leisure markets.
– What to expect: Competitive low fare offers, often with no change/cancellation fees on many fare classes — a helpful feature for uncertain travel plans. Route density is lower than the largest carriers, so options may be limited 1.
– Best for: Travelers near Breeze-served airports who want direct service without hub connections.
– Watch out for: Limited frequency and route coverage compared with national carriers.
Avelo Airlines
– Who they are: A regional low-cost carrier concentrated on leisure markets and secondary airports.
– What to expect: Low base fares and separate fees for carry-ons and checked bags. Convenient if you live near an Avelo base and they fly your destination 1.
– Best for: Regional travelers seeking short direct flights from smaller airports.
– Watch out for: Smaller route map means many travelers will need to connect with another airline for broader itineraries.
Fee comparison: numbers that matter (use this to calculate your all-in price)
Below are example typical fee ranges compiled from carrier pricing disclosures and common booking patterns. These are illustrative averages to help you compare the “all-in” cost; exact amounts vary by route and time of purchase 1.
| Airline | Carry-on fee (over personal item) | First checked bag | Seat selection / assigned seat |
|---|---|---|---|
| Frontier | $59–$99 (cheaper if bought early) 1 | $55–$99 (book early for lower price) 1 | $17+ depending on route 1 |
| Allegiant | $10–$75 (varies) 1 | $15–$70 (varies) 1 | $10–$80 depending on seat 1 |
| Southwest | Free (one carry-on + personal item) 1 | ~$45 online; second bag higher 1 | Open seating / assigned seating policies evolving 1 |
| JetBlue | Personal item only on the cheapest fares; carry-on fees when required | $45+ prepaid; $59+ for second bag common 1 | $4+ each way for some seats 1 |
| Breeze | Varies by fare bundle; many bundles include at least one bag | Bundled options often include bags; a la carte fees apply | Varies by bundle 1 |
| Avelo | ~$34+ for carry-on; checked bag $43+ | $43+ depending on route/booking time 1 | Varies by route 1 |
A practical all-in example
– If a Frontier headline fare is $49, add a carry-on booked at purchase (e.g., $59) and a basic seat ($17). Total one-way ticket becomes $125 — more than many mid-tier airline baseline fares after their included carry-on.
– Rule of thumb: always add the items you will actually need (carry-on, checked bag, seat) into your comparison before booking.
When a major carrier may be the better value
– If your trip requires checked luggage for more than one passenger, major airlines with bundled prices or rewards card benefits can be cheaper overall.
– For long flights where legroom, Wi‑Fi and meal service matter, the perceived value of added comfort may outweigh a lower headline fare.
– For itineraries with tight connections, legacy carriers generally have more robust rebooking options and partnership networks.
Money-saving tactics that work in 2026
– Pack to a personal item: The largest immediate savings is removing overhead carry-on fees on ultra-low-cost carriers.
– Buy bags and seats at booking: Gate/airport prices are typically the highest.
– Compare the all-in price: Use the airline booking preview or a fare-comparison tool (e.g., Google Flights) and add the extras you’ll need before checking out.
– Travel midweek and off-peak hours: Budget carriers often price these flights lower.
– Check airport choice: Secondary airports used by Breeze, Avelo or Allegiant can be cheaper and faster to navigate, but check transport time and costs to the city center.
– Use loyalty and credit card benefits: If you fly one carrier often, a co-branded card or loyalty status can restore perks like free bags or priority boarding that change the math.
– Watch bundles: Some carriers sell bundled fares that include bags and seat selection at a discount compared with buying items separately.
Actionable checklist before you hit “Book”
– Find the headline fare and click through to the checkout screen. Confirm the price includes the extras you need.
– Ask: will I bring a carry-on, check a bag, choose a seat or need priority boarding? Add those costs into your total.
– Compare total price across two or three airlines on the same route and date.
– Factor in logistics: airport distance, parking, ground transport, and potential overnight stays if connections are risky.
– If you value flexibility, confirm the carrier’s change/cancellation policy before paying.
– Save your boarding pass and receipts in a folder or travel app — you’ll need them if issues arise.
Safety and consumer protection — what to remember
All U.S. commercial airlines must meet federal safety standards enforced by the Federal Aviation Administration; budget carriers are not exempt from these regulations [2]. For consumer protections (delays, cancellations, refunds), the U.S. Department of Transportation provides guidance on airline obligations and how to file complaints if you believe your rights were violated.
Final thoughts
Budget airlines remain a powerful way to lower travel costs, but the cheapest headline price is only the beginning. In 2026, the smart approach is to calculate the all-in ticket cost — seat choice, carry-on or checked bags, and any extras you’ll actually use — then match the carrier to your priorities: lowest possible price, flexible changes, onboard comfort, or a direct route from a secondary airport. If you travel light, check the carrier network for nonstop options; if you travel with family or luggage, run the math against a mid-tier carrier before clicking pay.
References
1. The Penny Hoarder, “Best Budget Airlines in the US: A 2026 Comparison” (summary of carrier fees and policies used as reference for fee ranges and policy changes) — https://www.thepennyhoarder.com/save-money/budget-airlines/
2. Federal Aviation Administration (FAA), overview of airline safety oversight — https://www.faa.gov/airlines/ (general safety regulation information)
