What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Appleton round-trip?

Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Appleton is Delta. Our recent data shows that you can find tickets from as low as $233 on this airline. An additional option worth looking into is United Airlines, starting at $253. These flights start at 45% lower than the current average price 3 months from now.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Appleton?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Appleton flight should consider departing on Saturday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Appleton ranges from 1.1 - 3.8 inches per month. June is typically the wettest month, when rainfall can reach 3.8 in. February is typically the driest time to visit Appleton when rainfall is around 1.1 in.

If weather is an important factor for your trip to Appleton, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 17.6 F).

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Appleton?

Flights from Washington, D.C. Dulles Intl Airport to Appleton are found to be more expensive on Sunday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Appleton.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Appleton?

March can be a great time to fly to Appleton from Washington, D.C. Dulles Intl Airport with a flight ticket averaging about $448. Cheapflights users have found deals in the month of March for as cheap as $283. The most expensive prices can be found in the month of November.

What is the cheapest time of day to fly from IAD to ATW?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Appleton at noon. If you’re flexible enough to do this you can expect to save up to 48% on your trip compared to booking a flight in the afternoon.

What airport do you fly into for flights to Appleton from Washington, D.C. Dulles Intl?

Appleton Intl (ATW) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Appleton. You should not have trouble finding flights to Appleton Intl from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Appleton airport from Washington, D.C. Dulles Intl. It is only a 5.1 mi journey from Appleton Intl (ATW) to Appleton’s city center.

Can I find deals for flights from Dulles Intl to Appleton that include hotel bookings?

Yes. In addition to deals on Dulles Intl to Appleton flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to Appleton?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Appleton.

Can I find deals for business class flights from Dulles Intl to Appleton?

Yes. Cheapflights offers flight deals from Dulles Intl to Appleton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$145+ Flights from Washington, D.C. Dulles Intl Airport to Appleton

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Dulles Intl to Appleton with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dulles Intl to Appleton

Round-trip from	$249 (Delta)
One-way from	$145 (Kiwi.com)
Popular in	March
Cheapest in	September
Average price	$484

From Washington, D.C. Dulles Intl to Appleton Intl

Search Deals

One-way flight from Washington, D.C. Dulles Intl to Appleton Intl

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($30 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from Dulles Intl to Appleton

Cheapest flights from Dulles Intl to Appleton
Explore the most affordable flight options available from Dulles Intl to Appleton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Tue 9/96:15 amIAD - ATW

1 stop6h 16mDelta

Tue 9/165:35 amATW - IAD

1 stop5h 05mDelta

Deal found 8/13

$249

Thu 9/45:25 pmIAD - ATW

1 stop6h 28mDelta

Wed 9/105:34 amATW - IAD

1 stop7h 57mDelta

Deal found 8/13

$273

Wed 10/298:09 amIAD - ATW

1 stop7h 43mAmerican Airlines

Tue 11/115:45 amATW - IAD

2 stops10h 04mAmerican Airlines

Deal found 8/13

$316

Thu 12/251:00 pmIAD - ATW

1 stop4h 58mUnited Airlines

Mon 12/295:35 pmATW - IAD

1 stop5h 40mUnited Airlines

Deal found 8/13

$319

Sat 9/205:25 pmIAD - ATW

1 stop6h 15mDelta

Sun 9/215:35 amATW - IAD

1 stop5h 05mDelta

Deal found 8/12

$324

Wed 8/278:20 amIAD - ATW

1 stop4h 45mUnited Airlines

Thu 8/288:20 amATW - IAD

1 stop6h 32mUnited Airlines

Deal found 8/13

$337

Wed 10/291:00 pmIAD - ATW

1 stop4h 47mDelta

Tue 11/115:29 amATW - IAD

1 stop7h 28mDelta

Deal found 8/13

$348

Fri 8/224:13 pmIAD - ATW

2 stops8h 25mAllegiant Air

Sun 8/247:30 amATW - IAD

1 stop9h 50mAllegiant Air

Deal found 8/12

$377

Thu 9/411:18 amIAD - ATW

1 stop4h 57mAmerican Airlines

Wed 9/109:37 amATW - IAD

2 stops8h 14mAmerican Airlines

Deal found 8/13

$400

Best flights from Dulles Intl to Appleton
Discover carefully curated flight deals from Dulles Intl to Appleton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Tue 9/95:25 pmIAD - ATW

1 stop6h 28mDelta

Tue 9/165:35 amATW - IAD

1 stop5h 05mDelta

Deal found 8/12

$249

Wed 10/298:09 amIAD - ATW

1 stop7h 43mAmerican Airlines

Tue 11/115:45 amATW - IAD

2 stops10h 04mAmerican Airlines

Deal found 8/13

$316

Thu 12/251:00 pmIAD - ATW

1 stop4h 58mUnited Airlines

Mon 12/295:35 pmATW - IAD

1 stop5h 40mUnited Airlines

Deal found 8/13

$319

Wed 12/36:10 amIAD - ATW

1 stop5h 20mDelta

Sat 12/65:20 pmATW - IAD

1 stop4h 40mDelta

Deal found 8/13

$249

Thu 9/45:25 pmIAD - ATW

1 stop6h 28mDelta

Wed 9/105:34 amATW - IAD

1 stop7h 57mDelta

Deal found 8/13

$273

Wed 8/278:20 amIAD - ATW

1 stop4h 45mUnited Airlines

Thu 8/288:20 amATW - IAD

1 stop6h 32mUnited Airlines

Deal found 8/13

$337

Sat 9/206:15 amIAD - ATW

1 stop6h 13mDelta

Sat 9/205:15 pmATW - IAD

1 stop5h 11mDelta

Deal found 8/12

$324

Sat 9/205:25 pmIAD - ATW

1 stop6h 15mDelta

Sun 9/215:35 amATW - IAD

1 stop5h 05mDelta

Deal found 8/12

$324

Sat 9/66:15 pmIAD - ATW

1 stop5h 02mDelta

Sat 9/135:15 pmATW - IAD

1 stop5h 11mDelta

Deal found 8/13

$324

Wed 10/291:00 pmIAD - ATW

1 stop4h 47mDelta

Tue 11/115:29 amATW - IAD

1 stop7h 28mDelta

Deal found 8/13

$348

Last-minute flights from Dulles Intl to Appleton
Discover last-minute flight deals from Dulles Intl to Appleton. Data last updated August 14, 2025 and is based on user searches.

Thu 8/216:35 amIAD - ATW

1 stop6h 30mUnited Airlines

Sat 8/238:20 amATW - IAD

1 stop6h 32mUnited Airlines

Deal found 8/12

$464

Fri 8/224:13 pmIAD - ATW

2 stops8h 25mAllegiant Air

Sun 8/247:30 amATW - IAD

1 stop9h 50mAllegiant Air

Deal found 8/12

$377

Fri 8/226:00 amIAD - ATW

1 stop15h 41mDelta

Sat 8/236:12 pmATW - IAD

1 stop4h 14mDelta

Deal found 8/12

$468

Fri 8/225:25 pmIAD - ATW

1 stop6h 28mDelta

Sun 8/247:00 amATW - IAD

1 stop3h 32mDelta

Deal found 8/12

$607

Fri 8/227:44 amIAD - ATW

2 stops11h 21mAmerican Airlines

Sat 8/234:24 pmATW - IAD

1 stop6h 33mAmerican Airlines

Deal found 8/12

$620

Sat 8/235:25 pmIAD - ATW

1 stop6h 28mDelta

Sun 8/247:00 amATW - IAD

1 stop3h 32mDelta

Deal found 8/12

$493

Sat 8/236:00 amIAD - ATW

1 stop5h 28mDelta

Sat 8/236:12 pmATW - IAD

1 stop13h 47mDelta

Deal found 8/12

$513

Sat 8/235:10 pmIAD - ATW

1 stop5h 33mUnited Airlines

Sun 8/248:20 amATW - IAD

1 stop4h 29mUnited Airlines

Deal found 8/12

$564

Sat 8/239:14 amIAD - ATW

2 stops9h 47mAmerican Airlines

Sun 8/243:40 pmATW - IAD

1 stop7h 19mAmerican Airlines

Deal found 8/12

$587

Wed 8/278:20 amIAD - ATW

1 stop4h 45mUnited Airlines

Thu 8/288:20 amATW - IAD

1 stop6h 32mUnited Airlines

Deal found 8/13

$337

Thu 9/45:25 pmIAD - ATW

1 stop6h 28mDelta

Wed 9/105:34 amATW - IAD

1 stop7h 57mDelta

Deal found 8/13

$273

Thu 9/411:18 amIAD - ATW

1 stop4h 57mAmerican Airlines

Wed 9/109:37 amATW - IAD

2 stops8h 14mAmerican Airlines

Deal found 8/13

$400

One-way flights from Dulles Intl to Appleton
Search for one-way flight options from Dulles Intl to Appleton. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Sun 9/217:09 pmIAD - ATW

1 stop16h 18mMultiple Airlines

Deal found 8/13

$145

Tue 9/166:15 amIAD - ATW

1 stop6h 13mDelta

Deal found 8/14

$149

Sun 9/216:00 amIAD - ATW

1 stop5h 28mDelta

Deal found 8/14

$169

Tue 9/162:21 pmIAD - ATW

2 stops9h 04mAmerican Airlines

Deal found 8/13

$189

Mon 9/16:00 amIAD - ATW

1 stop5h 28mDelta

Deal found 8/13

$200

Wed 9/172:21 pmIAD - ATW

2 stops9h 04mAmerican Airlines

Deal found 8/14

$240

Fri 9/195:25 pmIAD - ATW

1 stop6h 15mDelta

Deal found 8/14

$260

Fri 9/192:21 pmIAD - ATW

2 stops9h 04mAmerican Airlines

Deal found 8/14

$284

Sat 10/118:16 amIAD - ATW

2 stops14h 17mUnited Airlines

Deal found 8/14

$293

Thu 9/188:38 amIAD - ATW

2 stops6h 28mUnited Airlines

Deal found 8/14

$296

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Appleton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Tue 9/9

5:25 pm-10:53 pm

1 stop6h 28m

Appleton Intl

Tue 9/16

5:35 am-11:40 am

1 stop5h 05m

$249

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Wed 12/3

6:10 am-10:30 am

1 stop5h 20m

Appleton Intl

Sat 12/6

5:20 pm-11:00 pm

1 stop4h 40m

$249

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Thu 9/4

5:25 pm-10:53 pm

1 stop6h 28m

Appleton Intl

Wed 9/10

5:34 am-2:31 pm

1 stop7h 57m

$273

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Wed 10/29

8:09 am-2:52 pm

1 stop7h 43m

Appleton Intl

Tue 11/11

5:45 am-4:49 pm

2 stops10h 04m

$316

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Thu 12/25

1:00 pm-4:58 pm

1 stop4h 58m

Appleton Intl

Mon 12/29

5:35 pm-12:15 am

1 stop5h 40m

$319

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Sat 9/20

6:15 am-11:28 am

1 stop6h 13m

Appleton Intl

Sat 9/20

5:15 pm-11:26 pm

1 stop5h 11m

$324

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Sat 9/20

5:25 pm-10:40 pm

1 stop6h 15m

Appleton Intl

Sun 9/21

5:35 am-11:40 am

1 stop5h 05m

$324

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Sat 9/6

6:15 pm-10:17 pm

1 stop5h 02m

Appleton Intl

Sat 9/13

5:15 pm-11:26 pm

1 stop5h 11m

$324

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Wed 8/27

8:20 am-12:05 pm

1 stop4h 45m

Appleton Intl

Thu 8/28

8:20 am-3:52 pm

1 stop6h 32m

$337

Washington, D.C.Appleton

IAD - ATW

IADATW

Washington, D.C. Dulles Intl

Wed 10/29

1:00 pm-4:47 pm

1 stop4h 47m

Appleton Intl

Tue 11/11

5:29 am-1:57 pm

1 stop7h 28m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 18 results

Best time to book a flight from Dulles Intl to Appleton

Have a flexible travel schedule? Discover the best time to fly to Appleton from Dulles Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Appleton

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Appleton?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Appleton (average of $313). Flying from Washington, D.C. Dulles Intl Airport to Appleton in March is currently the most expensive (average of $421). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Appleton

Read reviews from past customers who have flown Delta and United Airlines from Washington, D.C. Dulles Intl Airport to Appleton. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,980 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,916 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to Appleton from Washington, D.C. Dulles Intl?
Appleton Intl (ATW) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Appleton. You should not have trouble finding flights to Appleton Intl from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Appleton airport from Washington, D.C. Dulles Intl. It is only a 5.1 mi journey from Appleton Intl (ATW) to Appleton’s city center.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Appleton round-trip?
Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Appleton is Delta. Our recent data shows that you can find tickets from as low as $233 on this airline. An additional option worth looking into is United Airlines, starting at $253. These flights start at 45% lower than the current average price 3 months from now.
Can I find deals for flights from Dulles Intl to Appleton that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Appleton flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Appleton?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Appleton.
Can I find deals for business class flights from Dulles Intl to Appleton?
Yes. Cheapflights offers flight deals from Dulles Intl to Appleton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Appleton?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Appleton (average of $313). Flying from Washington, D.C. Dulles Intl Airport to Appleton in March is currently the most expensive (average of $421). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Neenah

Fond du Lac

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Appleton

Reagan-National to O'Hare Intl flights

Dulles Intl to O'Hare Intl flights

Baltimore to O'Hare Intl flights

Dulles Intl to Minneapolis flights

Reagan-National to Minneapolis flights

Baltimore to Minneapolis flights

Dulles Intl to Milwaukee flights

Baltimore to Milwaukee flights

Reagan-National to Milwaukee flights

Reagan-National to Madison flights

Dulles Intl to Madison flights

Baltimore to Madison flights

Dulles Intl to Green Bay flights

Reagan-National to Green Bay flights

Baltimore to Green Bay flights

Dulles Intl to Rhinelander flights

Reagan-National to Rhinelander flights

Baltimore to Appleton flights

Baltimore to Rhinelander flights

Reagan-National to Appleton flights

Baltimore to Eau Claire flights

Dulles Intl to Eau Claire flights

Reagan-National to Eau Claire flights

Baltimore to Duluth flights

Reagan-National to Duluth flights

Dulles Intl to Duluth flights

Reagan-National to Wausau flights

Dulles Intl to La Crosse flights

Baltimore to Wausau flights

Reagan-National to La Crosse flights

Dulles Intl to Wausau flights

Baltimore to La Crosse flights

Baltimore to Escanaba flights

Dulles Intl to Escanaba flights

Dulles Intl to Dubuque flights

Reagan-National to Dubuque flights

Baltimore to Dubuque flights

Reagan-National to Escanaba flights

Baltimore to Ironwood flights

Other flights to Appleton

Complete your trip

Appleton car rentals

Milwaukee-Mitchell Airport car rentals

Madison Truax Field Airport car rentals

Appleton Intl Airport car rentals

Green Bay Austin-Straubel Airport car rentals

Wausau Central Wisconsin Airport car rentals

Milwaukee car rentals

Green Bay car rentals

Madison car rentals

Eau Claire car rentals

La Crosse car rentals

Top 2 airlines flying from Dulles Intl to Appleton

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$233	Average$413	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$253	Average$423	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$145+ Cheap flights from Dulles Intl (IAD) to Appleton (ATW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Appleton with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Dulles Intl to Appleton

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Dulles Intl to Appleton

Cheapest flights from Dulles Intl to AppletonExplore the most affordable flight options available from Dulles Intl to Appleton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Dulles Intl to Appleton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Appleton that are best for you.

Best time to book a flight from Dulles Intl to Appleton

Have a flexible travel schedule? Discover the best time to fly to Appleton from Dulles Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Appleton

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Appleton?

Reviews of airlines servicing Appleton

Read reviews from past customers who have flown Delta and United Airlines from Washington, D.C. Dulles Intl Airport to Appleton. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Appleton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Appleton from Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Appleton round-trip?

Can I find deals for flights from Dulles Intl to Appleton that include hotel bookings?

How can I find direct flights from Dulles Intl to Appleton?

Can I find deals for business class flights from Dulles Intl to Appleton?

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Appleton?

Traveling to a place near Appleton?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Appleton

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Dulles Intl to Appleton

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Dulles Intl to Appleton
Explore the most affordable flight options available from Dulles Intl to Appleton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.