Route Price Intelligence
Cheap Flights From Chicago to Washington Dc - Dulles
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$281
Great Deal
Under $226
Typical Range
$226 – $289
Lowest We've Seen
$136
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$289
Feb
—
Mar
—
Apr
$254
May
$185
Jun
$228
Jul
$230
Aug
$230
Sep
$289
Oct
$289
Nov
$299
Dec
$289
Cheapest Average Expensive
Best Time to Fly from Chicago to Washington Dc - Dulles
The cheapest time to fly from Chicago to Washington Dc - Dulles is typically May, when fares average around $185. The most expensive month tends to be November at around $299. For the best deals, consider flying in May, June, July.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: August44,484 fares analyzedTypical low: $267