Cheap flights from Washington, D.C., United States to Allentown, United States

Flights starting at $113. Choose between Allegiant Air, Spirit Airlines, or Frontier Airlines to find the best price.

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Travelers usually depart from Baltimore–Washington International, Washington Dulles International, or Ronald Reagan Washington National when they travel from Washington, D.C. to Allentown. The most popular airlines for this route are Allegiant Air, Spirit Airlines, Frontier Airlines, United Airlines, and JetBlue Airways. Washington, D.C. and Allentown have 122 direct flights per week.

Check-in for a flight from Washington, D.C. to Allentown

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Allegiant AirAAYG4NoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
JetBlue AirwaysJBUB6NoOpens 24 days before flight
Closes 2 hours before flight

Weather in Allentown

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January2°C-5°C
February4°C-4°C
March8°C0°C
April15°C4°C
May20°C10°C
June25°C14°C
July29°C18°C
August28°C17°C
September24°C13°C
October17°C8°C
November10°C1°C
December5°C-1°C
Hottest Month
29°C
July
Coldest month
-5°C
January
Sunny days
256
days per year
Snow days
15
days per year

14 day forecast

Thursday
21 Mar
5°C-5°C
28 Mar
83%
11°C4°C
Friday
22 Mar
8°C-5°C
29 Mar
15°C2°C
Saturday
23 Mar
85%
9°C-1°C
30 Mar
88%
11°C6°C
Sunday
24 Mar
10°C-3°C
31 Mar
78%
5°C2°C
Monday
25 Mar
12°C-2°C
1 Apr
8°C0°C
Tuesday
26 Mar
13°C0°C
2 Apr
13°C-1°C
Wednesday
27 Mar
88%
5°C4°C
3 Apr
81%
20°C5°C

Frequently asked questions

What are the most popular routes to and from Washington, D.C.?
What are the most popular routes to and from Allentown?
Which airports are there in Washington, D.C.?
What airports are near Washington, D.C.?
What airports are near Allentown?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Washington, D.C. and Allentown?
What is Virtual Interlining and how do I use it?
Which airlines fly between Washington, D.C. and Allentown?
When's the best time to travel between Washington, D.C. and Allentown?
What flights operate between Washington, D.C. and Allentown?
How many airports are there near Washington, D.C.?
How many airports are there near Allentown?
What time do nonstop (direct) flights between Washington, D.C. and Allentown depart?
What time do nonstop (direct) flights between Washington, D.C. and Allentown arrive?
What time do flights between Washington, D.C. and Allentown depart?
What time do flights between Washington, D.C. and Allentown arrive?

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