What is the cheapest airline?

Finding the cheapest airline for your trip isn’t as simple as naming one single carrier. Prices change daily based on routes, demand, season, and even time of day. Instead of there being a single “cheapest airline” everywhere, different low-cost airlines dominate different regions and types of travel. Understanding how airline pricing works—and which carriers are usually cheapest in each market—will help you consistently find the lowest fares.

Below is a detailed guide to help you answer the question: what is the cheapest airline for your specific route and travel style?

Why There’s No Single “Cheapest Airline”

Airfare is dynamic. Airlines use complex pricing algorithms (yield management) that change prices constantly depending on:

Route popularity and competition
Advance purchase time and booking window
Day of week and time of day
Season and holidays
Load factor (how full the flight already is)

A carrier that’s cheapest on one route or day can be more expensive on another. Also, “cheapest” can mean:

Lowest base fare
Lowest total cost (after bags, seats, food, and fees)
Best value (price compared to comfort, reliability, and schedule)

Because of this, the smarter question is: which airlines are usually the cheapest for the destination and travel style I have in mind?

Airlines That Are Often the Cheapest by Region

Here’s a breakdown of airlines that frequently offer the lowest fares in different parts of the world. Availability and prices vary by route, so always compare.

1. North America (United States & Canada)

Ultra-low-cost carriers (ULCCs):
These airlines advertise very low base fares and charge extra for almost everything else.

Spirit Airlines (US)
- Often among the lowest base fares for domestic US routes and flights to Latin America/Caribbean.
- Charges for carry-ons, checked bags, seat selection, snacks, and sometimes even printing boarding passes at the airport.
- Cheapest when:
  - You travel ultra-light with a personal item only
  - You don’t care about seat selection
  - You book early and avoid peak days
Frontier Airlines (US)
- Similar model to Spirit: very low base fares with many add-ons.
- Frequently has sales like “$19 fares” (with heavy restrictions).
- Good for:
  - Short-haul trips
  - Flexible travelers who don’t need frills
Allegiant Air (US)
- Focuses on leisure routes to vacation destinations (e.g., Florida, Las Vegas).
- Often cheapest from smaller regional airports.
- Limited frequency (few flights per week), so changes can be costly.
Sun Country Airlines (US)
- Hybrid low-cost carrier, often cheap between the Midwest and vacation destinations.
- Can be cheaper than big airlines on specific leisure routes.

Low-cost / value carriers:

Southwest Airlines (US)
- Not always the lowest base fare, but often the lowest total cost when you factor in:
  - 2 free checked bags
  - No change fees on most fares
- Great option for domestic US travel, especially if you check bags or might change flights.
JetBlue (US)
- Sometimes very competitive on price, especially between major cities and to the Caribbean.
- Better legroom and inflight entertainment than many low-cost rivals.
- Can be cheaper than legacy airlines when you travel with just a personal item or carry-on.
WestJet & Flair Airlines (Canada)
- WestJet is a low-cost-to-midrange carrier that often undercuts Air Canada on price.
- Flair is an ultra-low-cost airline that frequently offers the lowest base fares within Canada and to select US routes, with fees for extras.

When comparing:

Spirit, Frontier, Allegiant, and Flair often offer the cheapest advertised fares
Southwest and JetBlue often offer the best value for what you get

2. Europe

Europe has one of the most competitive low-cost markets in the world. Some of the cheapest airlines there include:

Ryanair (Ireland-based)
- Frequently among the lowest fares in Europe.
- Vast route network connecting secondary airports.
- Charges for:
  - Larger carry-on bags
  - Checked luggage
  - Priority boarding
  - Seat selection
- Often cheapest if:
  - You fly with only a small backpack
  - You’re flexible about flight times and airports
  - You book early
easyJet (UK-based)
- Another major low-cost carrier, often slightly more comfortable or convenient than Ryanair.
- Base fares are often low, especially off-peak.
- More likely to fly into primary airports than Ryanair on some routes.
Wizz Air (Hungary-based)
- Focuses on Central/Eastern Europe and some Middle East destinations.
- Very low base fares, strict baggage rules, and many add-on fees.
Vueling (Spain-based), Transavia (France/Netherlands), Eurowings (Germany)
- Budget arms or low-cost subsidiaries of larger airlines.
- Often cheaper than traditional carriers on European routes, with more moderate fees.

In Europe, the cheapest airlines by base fare are usually:

Ryanair
Wizz Air
easyJet

But the cheapest total trip cost depends on luggage and extras.

3. Asia

Asia is extremely competitive, and many low-cost airlines offer cheap fares across the region.

AirAsia (Malaysia-based)
- One of Asia’s most famous low-cost carriers.
- Often the cheapest option for Southeast Asian routes and some longer-haul routes (AirAsia X).
- Charges for luggage, seats, and meals, but prices are usually transparent and competitive.
IndiGo (India-based)
- India’s largest airline by market share.
- Frequently the lowest fare on domestic India routes and some regional international flights.
- Known for on-time performance and simple service.
Scoot (Singapore Airlines subsidiary)
- Low-cost carrier for medium- and long-haul flights across Asia and to Australia/Europe.
- Often cheaper than full-service airlines on the same routes.
VietJet Air (Vietnam), Cebu Pacific (Philippines), Peach & Jetstar Japan (Japan)
- All offer very low base fares within their home markets and regionally.

For Asia, airlines frequently among the cheapest include:

AirAsia
IndiGo
VietJet Air
Cebu Pacific
Scoot

4. Middle East

The Middle East has a mix of luxury full-service carriers and regional low-cost airlines:

Flydubai (UAE)
- Low-cost airline with a strong regional network from Dubai.
- Often cheaper than Emirates on shorter routes.
Air Arabia (UAE)
- Budget carrier with hubs in Sharjah and other cities.
- Frequently competitive for routes between the Middle East, North Africa, and Asia.
Jazeera Airways (Kuwait), SalamAir (Oman)
- Low-cost regional carriers that can offer some of the cheapest fares within the Gulf region and nearby countries.

5. Latin America & the Caribbean

Low-cost carriers in this region have grown rapidly:

Volaris & Viva Aerobus (Mexico)
- Frequently the cheapest options on domestic Mexican routes and some US–Mexico routes.
- Ultra-low-cost model with lots of fees for extras.
GOL & Azul (Brazil)
- Low-cost / hybrid carriers that are often cheaper than LATAM on domestic routes in Brazil.
Sky Airline & JetSMART (Chile-based)
- Budget carriers serving South America, often with very low base fares.
Caribbean routes
- Prices vary widely. Sometimes US low-cost carriers (Spirit, Frontier, JetBlue, Southwest) are cheapest from North America.
- Local Caribbean airlines may have higher fares due to limited competition.

6. Africa

The low-cost market in Africa is more limited but growing:

FlySafair, Mango (South Africa)
- Typically cheaper on domestic South African routes than full-service carriers.
Fastjet (limited operations), Jambojet (Kenya)
- Regional low-cost options that can offer competitive fares.

Because networks are smaller and competition is lower, fares in some African markets remain higher overall compared to Europe or Southeast Asia.

Cheapest Airline vs Cheapest Total Cost

The airline with the cheapest advertised fare may not be the cheapest once you include all costs. Consider:

Common Extra Fees on Low-Cost Airlines

Carry-on baggage beyond a small personal item
Checked baggage (priced per bag, sometimes per kilo)
Seat selection (even standard seats)
Priority boarding
Airport check-in or printing boarding passes
Changes or cancellations
Food and drinks onboard

Full-service airlines (like Delta, United, Emirates, Singapore Airlines, etc.) often include:

At least one carry-on bag
Some checked baggage (especially on international flights)
Snacks or meals
Standard seat assignment

If you need checked bags, change flexibility, or value comfort, a full-service airline might be cheaper overall than a low-cost carrier once you add up all fees.

How to Find the Cheapest Airline for Your Route

Instead of looking for a universal “cheapest airline,” use a strategy that consistently finds the lowest price for your specific trip.

1. Use Flight Comparison Tools

Meta-search engines and OTAs (online travel agencies) help compare multiple airlines in one view:

Google Flights
Skyscanner
Kayak
Momondo
Kiwi.com

Tips:

Search in “flexible dates” or “whole month” mode to see which days are cheapest.
Try nearby airports—low-cost carriers often use secondary airports that may be cheaper.
Check both one-way and round-trip pricing; sometimes two one-ways are cheaper.

2. Compare Directly on Airline Websites

Once you find a cheap fare on a comparison site:

Visit the airline’s official website to see if it’s cheaper there.
Some low-cost airlines don’t show up on all search engines or may offer exclusive web-only deals.

3. Be Flexible with Dates, Times, and Airports

Flexibility is often more important than the airline itself:

Flying on Tuesdays or Wednesdays is often cheaper than Fridays or Sundays.
Early morning or late-night flights are usually cheaper than midday departures.
Secondary airports (e.g., London Stansted vs Heathrow, Paris Beauvais vs CDG) can host cheaper airlines.

4. Check the Total Price at Checkout

Always review the final price:

Add the bags you actually need.
Include seat selection if it matters to you.
Factor in transport costs to and from the airport (secondary airports can be farther away and more expensive to reach).

A slightly higher fare on a better-located airport or more inclusive airline can still be the cheapest overall once you account for ground transport and fees.

When the Cheapest Airline Might Not Be the Best Choice

Going purely for the lowest base fare can backfire. Consider more than just price:

1. Reliability and On-Time Performance

Some ultra-low-cost carriers have:

Higher cancellation or delay rates
Fewer alternative flights if something goes wrong

If you’re connecting to a cruise, event, or long-haul flight, reliability matters.

2. Customer Service and Change Fees

If your plans may change, look at:

Change and cancellation fees
Credit or voucher policies
Call center availability or online self-service options

Sometimes a slightly more expensive airline with flexible policies saves money if plans change.

3. Flight Times and Convenience

A very early or very late flight may require:

Extra hotel nights
Expensive taxi rides
Longer transit from a distant airport

These can outweigh the savings of a low fare.

Quick Reference: Airlines Often Among the Cheapest by Market

While there is no single answer to “what is the cheapest airline,” the following carriers frequently offer some of the lowest fares:

United States: Spirit, Frontier, Allegiant, Frontier, Southwest (great total value), JetBlue (on some routes)
Canada: Flair, Swoop (where available), WestJet (often cheaper than full-service alternatives)
Europe: Ryanair, Wizz Air, easyJet, Vueling
Asia: AirAsia, IndiGo, VietJet Air, Cebu Pacific, Scoot
Middle East: Flydubai, Air Arabia, SalamAir, Jazeera Airways
Latin America: Volaris, Viva Aerobus, Sky Airline, JetSMART
Africa: FlySafair, Jambojet (regional), some local low-cost carriers

Use these as starting points, not absolute winners.

Practical Tips to Always Get the Cheapest Viable Option

To consistently find the cheapest airline for your own trips:

Start wide
- Use a comparison tool to see all airlines and prices for your route.
Be flexible
- Adjust dates, times, and airports for lower fares.
Compare low-cost vs full-service
- Price out your actual needs (bags, seats, food).
- Check total cost, not just the initial fare.
Book early (but not too early)
- For low-cost airlines, booking 1–3 months ahead for domestic and 2–5 months for international often yields the best deals.
Watch sales and promo codes
- Many low-cost airlines run flash sales and promo campaigns.
- Sign up for emails or alerts from airlines that frequently serve your region.

Bottom Line: What Is the Cheapest Airline?

There is no single airline that is always the cheapest everywhere. Instead:

Ultra-low-cost carriers (like Spirit, Ryanair, AirAsia, Wizz Air, Volaris) usually offer the lowest base fares, especially if you travel light.
Low-cost and value carriers (like Southwest, JetBlue, easyJet, IndiGo) often deliver the lowest total cost when you factor in what’s included.
Full-service airlines can occasionally be the cheapest option once you include baggage, meals, flexible policies, and airport convenience.

To find the cheapest airline for your specific trip, use comparison tools, stay flexible on dates and airports, and always evaluate the total cost based on your actual travel needs—not just the advertised fare.