What is the cheapest airline?

Finding the cheapest airline isn’t as simple as naming one specific carrier. Prices change constantly based on routes, dates, demand, and promotions. Instead of a single “cheapest airline,” there are a few consistently low-cost airlines and smart booking strategies that can help you get the lowest possible fare for your trip.

Below, you’ll learn which airlines are usually cheapest in different regions, how to compare fares effectively, and the key tricks frequent travelers use to save money on flights.

Why there is no single “cheapest airline”

Airfare pricing is dynamic, meaning the “cheapest” option changes day to day, route to route. A few reasons:

Route differences: An airline might be cheap for domestic flights but expensive for international routes.
Fees and add-ons: Some airlines advertise ultra-low base fares but charge for bags, seat selection, and even printing boarding passes.
Seasonality and demand: Peak seasons, holidays, and big events can impact prices more than the airline brand.
Sales and promos: Flash sales, mistake fares, and promo codes can temporarily make a normally expensive airline the cheapest option.

Instead of looking for one globally cheapest airline, it’s more useful to know which low-cost carriers tend to offer the best deals in each region—and how to compare total trip costs.

The cheapest airlines by region

1. North America

In the U.S. and Canada, these airlines are widely known as budget-friendly:

Southwest Airlines
- Often competitive for domestic U.S. routes.
- Bags: First two checked bags and one carry-on are free (a major saving).
- Extras: No change fees, open seating model.
- Not always the absolute cheapest, but can be the best value once bag fees are considered.
Spirit Airlines (ultra-low-cost carrier)
- Often among the lowest base fares on many routes.
- Fees: Charges for carry-ons, checked bags, seat selection, and more.
- Great if you truly fly with just a small personal item and skip extras.
Frontier Airlines (ultra-low-cost carrier)
- Very low base fares, especially on competitive routes.
- Fees: Similar to Spirit—bags, seat selection, and changes cost extra.
- Best for minimalist travelers with flexible plans.
Allegiant Air
- Budget-friendly for smaller city and leisure destinations.
- Often cheap for vacation routes, but limited schedules.
JetBlue
- Not always the rock-bottom fare, but often a good balance of price and comfort.
- Bags: Basic fares may not include bags, but standard fares often do.

Takeaway: If you’re looking for the cheapest airline in North America, Spirit and Frontier often win on base price, but Southwest can be cheaper overall when you factor in free bags.

2. Europe

Europe is known for fierce competition among low-cost carriers:

Ryanair
- Frequently among the cheapest airlines in Europe for short-haul flights.
- Fees: Strict baggage rules and extra costs for almost everything.
- Ideal for travelers who pack very light and don’t mind basic service.
easyJet
- Another major low-cost carrier across Europe.
- Often slightly more expensive than Ryanair but with a somewhat more flexible experience.
Wizz Air
- Very cheap for routes in Central and Eastern Europe and some routes to the Middle East.
- Fees: Low base fares, high ancillary fees for bags and extras.
Vueling (Iberia-owned)
- Competitive low fares across Spain and parts of Europe.
- Good for bargain hunters around the Mediterranean.

Takeaway: Ryanair and Wizz Air often offer the lowest headline fares in Europe, but you must carefully check add-ons to know the real cost.

3. Asia-Pacific

In Asia, cheap airlines are often called low-cost carriers (LCCs):

AirAsia
- One of the most famous Asian low-cost airlines.
- Very competitive fares across Southeast Asia and some long-haul routes.
- Extensive network and frequent promotions.
Scoot (Singapore Airlines subsidiary)
- Budget-friendly flights from Singapore to destinations in Asia-Pacific and some long-haul routes.
- Good for value-conscious travelers who still want a reputable brand behind the airline.
IndiGo (India)
- Often the cheapest and most reliable choice on many domestic Indian routes.
- Huge network and frequent deals.
VietJet Air (Vietnam)
- Regular low fares within Vietnam and to nearby international destinations.
Jetstar (Australia-based)
- Budget arm of Qantas.
- Often among the cheapest for routes within Australia and to nearby regions.

Takeaway: AirAsia is often the go-to when people ask, “What is the cheapest airline in Asia?”, but the cheapest option depends heavily on your specific route.

4. Latin America

Key budget airlines in Latin America include:

Volaris (Mexico)
- Frequently the cheapest for routes within Mexico and to/from the U.S.
- Low base fares, with standard low-cost carrier fees.
Viva Aerobus (Mexico)
- Competes closely with Volaris on price with similar fee structures.
GOL (Brazil)
- Competitive fares for domestic Brazilian routes and some regional flights.
Sky Airline (Chile/Peru region)
- Low-cost carrier with good deals in the Southern cone of South America.

Takeaway: In Mexico and nearby U.S. routes, Volaris and Viva Aerobus are often very cheap assuming you travel light.

5. Middle East & Africa

Budget options in this region are expanding:

flydubai
- Low-cost carrier linked to Emirates.
- Often cheaper than full-service carriers for regional routes around the Middle East.
Air Arabia
- Offers low-cost flights across the Middle East, North Africa, and parts of Asia.
Fastjet / FlySafair / Kulula (routes & brands change over time)
- In Southern Africa, low-cost carriers can offer good prices on popular domestic routes (e.g., within South Africa or Tanzania).
- Availability and reliability can vary, so always check recent reviews.

Cheapest airline vs. cheapest flight: total cost matters

A common mistake is to focus only on the airline’s name or advertised fare. The cheapest airline for you might change once you include:

Baggage fees (carry-on and checked)
Seat selection (especially if traveling in a group or with kids)
Airport transfers (some low-cost airlines use far-away secondary airports)
Onboard food and drinks
Change/cancellation fees

Sometimes a full-service airline with a higher base fare is cheaper overall when bags and extras are included.

Example:

Airline A (ultra-low-cost)
- Base fare: $60
- Carry-on bag: $40
- Seat selection: $20
- Total: $120
Airline B (full-service)
- Base fare (bag + seat included): $95
- Total: $95 → Actually cheaper, even though the base fare looked higher.

How to consistently find the cheapest airline for your trip

Even with many low-cost options, the best way to answer “What is the cheapest airline for this trip?” is to compare:

1. Use flight comparison tools

Meta-search engines and OTAs (online travel agencies) make comparison easy:

Google Flights – Great for flexible date searches and quick price overview.
Skyscanner – Good for exploring “cheapest month” or “everywhere” destination searches.
Kayak / Momondo – Useful to compare multiple airlines, filters, and fare types.

Use these tools to:

Check multiple dates (depart a day earlier/later to see big savings).
Compare nearby airports (some budget airlines fly to cheaper secondary airports).
Filter by “carry-on only” if you plan to travel light.

2. Check airline websites directly

Some low-cost airlines don’t show all fares accurately (or at all) on third-party sites. After finding a flight:

Visit the airline’s official site and compare the total price.
Look for promo codes, email list deals, or membership discounts.

3. Be flexible with dates and times

Flexibility is often more important than airline choice:

Midweek flights (Tuesday–Thursday) are often cheaper than weekends.
Early morning or late-night flights can be lower priced.
Avoid peak holidays, major events, and school breaks if possible.

Strategies for getting ultra-cheap airline deals

To maximize savings across any airline:

1. Travel light

Almost every low-cost carrier makes money on bags and extras. To reduce costs:

Use a small personal item that fits under the seat.
Wear bulkier clothing layers on the plane.
Share one checked bag between multiple travelers if needed.

Flying with only a personal item often makes ultra-low-cost carriers the cheapest overall.

2. Book in the right time-window

There’s no perfect rule, but common guidelines:

Domestic flights: 1–3 months in advance.
International flights: 2–6 months in advance.
Use price alerts on Google Flights, Skyscanner, or similar tools to track drops.

3. Use points and miles

Sometimes the “cheapest airline” is the one you can fly for almost free:

Redeem credit card points or frequent flyer miles.
Watch for transfer bonuses (e.g., 20–30% extra when transferring points to an airline).
Even budget airlines often have loyalty programs with discount perks.

4. Look out for flash sales

Many low-cost airlines run frequent sales:

Ryanair, AirAsia, Southwest, and others often have 24–72 hour deals.
Follow airlines on social media or sign up for their email newsletters.
Check sale terms carefully — blackout dates and route restrictions are common.

Pros and cons of the cheapest airlines

When you prioritize the very lowest fare, consider the trade-offs:

Advantages of ultra-cheap airlines

Very low base fares
Great for short trips, solo travel, or weekend getaways
Good if you’re flexible and comfortable with basic service

Disadvantages

Restricted legroom and limited comfort
Fees for bags, seat selection, and sometimes basic services
Stricter rules about changes, cancellations, and refunds
Often fly into secondary airports far from city centers

If comfort, flexibility, or airport convenience are priorities, a slightly more expensive airline may offer better overall value.

How to decide which airline is cheapest for you

Instead of asking “What is the cheapest airline?” in general, ask:

Where am I flying from and to?
- Different regions have different budget leaders.
How much luggage will I bring?
- If you need checked bags, an airline like Southwest or a full-service carrier might beat an ultra-low-cost competitor.
How flexible are my dates?
- Flexibility can matter more than airline choice for saving money.
Do I care about comfort and extras?
- For long-haul flights, paying a bit more can dramatically improve the experience.
Which airline offers the lowest total cost at checkout (not just base fare)?
- Always compare the all-in price, including taxes and fees.

Summary: there is no single “cheapest airline”

The “cheapest airline” changes by region, route, and date.
In general:
- North America: Spirit, Frontier, Southwest (great with bags), Allegiant
- Europe: Ryanair, Wizz Air, easyJet
- Asia: AirAsia, IndiGo, Scoot, VietJet
- Latin America: Volaris, Viva Aerobus, Sky Airline, GOL
- Middle East & Africa: flydubai, Air Arabia, regional low-cost carriers

To consistently find the cheapest option, always:

Compare several airlines using tools like Google Flights or Skyscanner.
Check total trip cost (fare + bags + extras), not just the base fare.
Stay flexible with dates, airports, and times.
Travel light to take full advantage of ultra-low-cost carriers.

Using these strategies, you’ll almost always be able to identify the cheapest airline for your specific trip—even though there’s no single global answer.