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

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 Portsmouth. The most popular airlines for this route are Allegiant Air, Spirit Airlines, Frontier Airlines, Southern Airways Express, and JetBlue Airways. Washington, D.C. and Portsmouth have 73 direct flights per week.

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

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
Southern Airways ExpressFDY9XYesNo
JetBlue AirwaysJBUB6NoOpens 24 days before flight
Closes 2 hours before flight

Weather in Portsmouth

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January0°C-6°C
February1°C-5°C
March5°C-1°C
April11°C3°C
May17°C8°C
June21°C13°C
July25°C17°C
August25°C17°C
September21°C13°C
October15°C8°C
November9°C2°C
December3°C-1°C
Hottest Month
25°C
July
Coldest month
-6°C
January
Sunny days
255
days per year
Snow days
19
days per year

14 day forecast

Tuesday
30 Apr
95%
10°C7°C
7 May
18°C9°C
Wednesday
1 May
95%
11°C6°C
8 May
86%
15°C9°C
Thursday
2 May
87%
17°C7°C
9 May
86%
18°C10°C
Friday
3 May
88%
11°C7°C
10 May
86%
17°C9°C
Saturday
4 May
83%
11°C8°C
11 May
83%
18°C8°C
Sunday
5 May
84%
10°C8°C
12 May
21°C10°C
Monday
6 May
70%
17°C8°C
13 May
89%
10°C9°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 Portsmouth?
Which airports are there in Washington, D.C.?
What airports are near Washington, D.C.?
What airports are near Portsmouth?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Washington, D.C. and Portsmouth?
What is Virtual Interlining and how do I use it?
Which airlines fly between Washington, D.C. and Portsmouth?
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What flights operate between Washington, D.C. and Portsmouth?
How many airports are there near Washington, D.C.?
How many airports are there near Portsmouth?
What time do nonstop (direct) flights between Washington, D.C. and Portsmouth depart?
What time do nonstop (direct) flights between Washington, D.C. and Portsmouth arrive?
What time do flights between Washington, D.C. and Portsmouth depart?
What time do flights between Washington, D.C. and Portsmouth arrive?

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