Cheap Flights to Washington D.C.
$240 round trip from New Yorkseen Aug 20 · 19–23 Nov
Find flights to Washington D.C.
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Overview
Flying to Washington D.C.
Country
United States
Region
North America
Airport
IAD
Cheapest month we saw
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Fares we found
What we have seen flights to Washington D.C. cost
5 observations — too few to say which month is cheapest, so here they are as they came.
- August$355 round trip from New York · departing 2026-08-29 · seen Aug 23
- September$203 round trip from New York · departing 2026-09-28 · seen Aug 23
- October$218 round trip from New York · departing 2026-10-02 · seen Aug 23
- November$272 round trip from New York · departing 2026-11-07 · seen Aug 23
- December$282 round trip from New York · departing 2026-12-01 · seen Aug 23
Climate
Weather in Washington D.C., month by month
The warmest month in Washington D.C. is July, at an average high of 88°F; the coolest is January at 43°F. July brings the most rain.
| Month | High | Low | Rain |
|---|---|---|---|
| January | 43°F | 28°F | 3.1 in |
| February | 45°F | 28°F | 3.1 in |
| March | 55°F | 36°F | 3.8 in |
| April | 68°F | 46°F | 3.4 in |
| May | 77°F | 55°F | 3.5 in |
| June | 82°F | 64°F | 3.7 in |
| July | 88°F | 70°F | 3.9 in |
| August | 88°F | 70°F | 3.0 in |
| Septemberthis month | 82°F | 64°F | 3.0 in |
| October | 68°F | 52°F | 3.7 in |
| November | 55°F | 41°F | 3.1 in |
| December | 46°F | 32°F | 2.8 in |
Ten-year average (2015–2024) of measured daily observations, not a brochure estimate.
Full Washington D.C. guide coming soon
We're writing an in-depth guide to Washington D.C. — attractions, food, hotels, transport and the best time to visit. Meanwhile, search live fares above and grab a deal.
Good to know
Flying to Washington D.C. — your questions answered
- How much is a round trip flight to Washington D.C.?
- The cheapest round trip we currently hold is $240 from New York (seen Aug 20 · 19–23 Nov). We hold fares for 5 months, between $203 and $355 — too few to say which month is cheapest. These are prices a live search returned, not a standing offer, and they move daily.
- When is it warm in Washington D.C.?
- July is the warmest month in Washington D.C., averaging a daily high of 88°F, and 5 of the 12 months average 75°F or warmer. The coolest is January at 43°F. These are ten-year averages (2015–2024) of measured observations, not estimates.
- What is the weather like in Washington D.C. in September?
- In September, Washington D.C. averages a daily high of 82°F and an overnight low of 64°F; about 3.0 inches of rain fall across the month. Ten-year measured averages — an individual week can differ.
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