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$195+ Cheap flights from Dulles Intl (IAD) to Allentown (ABE)

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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ABE
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
1 adult, Economy
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Cheap flight deals from Dulles Intl to Allentown

Cheapest flights from Dulles Intl to Allentown
Explore the most affordable flight options available from Dulles Intl to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 11, 2026.

This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:22 pm
IAD
-
ABE
2 stops20h 26m
United Airlines
Wed 7/82:23 pm
ABE
-
IAD
2 stops21h 04m
United Airlines
Deal found 3/7$515
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:00 am
IAD
-
ABE
2 stops14h 10m
Multiple Airlines
Thu 4/232:40 pm
ABE
-
IAD
1 stop21h 31m
Multiple Airlines
Deal found 3/6$576
This American Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/235:00 am
IAD
-
ABE
1 stop6h 30m
American Airlines
Fri 3/2712:00 pm
ABE
-
IAD
1 stop4h 16m
American Airlines
Deal found 3/8$597
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/235:10 pm
IAD
-
ABE
2 stops16h 46m
United Airlines
Fri 3/276:51 pm
ABE
-
IAD
2 stops12h 34m
United Airlines
Deal found 3/8$607

Find flight deals from Dulles Intl to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Allentown (ABE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$515
(United Airlines)

One-way from

$195
(Kiwi.com)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Allentown-Bethlehem flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Allentown-Bethlehem flights.
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From Washington, D.C. Dulles Intl to Allentown-Bethlehem
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One-way flight from Washington, D.C. Dulles Intl to Allentown-Bethlehem
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Allentown that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 11, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Allentown

IAD - ABE

IADABE

Washington, D.C. Dulles Intl

Sat 7/4

10:10 pm-1:48 pm

2 stops15h 38m

Allentown-Bethlehem

Wed 7/8

2:23 pm-11:27 am

2 stops21h 04m

$515

Washington, D.C.Allentown

IAD - ABE

IADABE

Washington, D.C. Dulles Intl

Mon 4/20

6:00 am-8:10 pm

2 stops14h 10m

Allentown-Bethlehem

Thu 4/23

2:40 pm-12:11 pm

1 stop21h 31m

$576
Quickest round-trip

Washington, D.C.Allentown

IAD - ABE

IADABE

Washington, D.C. Dulles Intl

Mon 3/23

5:00 am-11:30 am

1 stop6h 30m

Allentown-Bethlehem

Fri 3/27

12:00 pm-4:16 pm

1 stop4h 16m

$597
Cheapest one-way

Washington, D.C.Allentown

IAD - ABE

IADABE

Washington, D.C. Dulles Intl

Fri 5/15

9:08 pm-6:03 pm

1 stop20h 55m

$195
Quickest one-way

Washington, D.C.Allentown

IAD - ABE

IADABE

Washington, D.C. Dulles Intl

Fri 5/15

6:20 am-8:10 pm

2 stops13h 50m

$232

Washington, D.C.Allentown

IAD - ABE

IADABE

Washington, D.C. Dulles Intl

Fri 3/27

9:45 pm-9:08 pm

2 stops23h 23m

$250

Washington, D.C.Allentown

IAD - ABE

IADABE

Washington, D.C. Dulles Intl

Fri 3/27

6:20 am-11:14 pm

3 stops16h 54m

$452

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Allentown flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Allentown flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Allentown flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Allentown flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Allentown flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown 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 Allentown

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

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Allentown (average of $100). Flying from Washington, D.C. Dulles Intl Airport to Allentown in March is currently the most expensive (average of $172). 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.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Allentown. 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 Allentown from Washington, D.C. Dulles Intl?

    Allentown-Bethlehem (ABE), located 3.9 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Allentown. 0 airlines have flights to Allentown-Bethlehem from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Allentown-Bethlehem should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Allentown?

    For as low as $515, United Airlines can have you in Allentown from Washington, D.C. Dulles Intl Airport in 15h 38m. There are 159 mi between Washington, D.C. Dulles Intl Airport and Allentown.

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

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

  • How can I find direct flights from Dulles Intl to Allentown?

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Allentown 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 Allentown?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Allentown (average of $100). Flying from Washington, D.C. Dulles Intl Airport to Allentown in March is currently the most expensive (average of $172). 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.

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