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Cheap flights from Chicago to Washington

Recently found return fares from $75, with November the cheapest month we know of. Compare dates, then book with the partner you choose.

Cheapest months to fly

Lowest recently found return fare in each month. Tap a month to see that month's calendar.

$104 Oct2026 $75 Nov2026

Chicago → Washington

November 2026

Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 $46 13 14 $116 15 $144 16 $102 17 $88 18 19 20 21 22 23 24 $105 25 $97 26 27 28 29 30
LowerHigherLowest this month

Lowest fares for the best day

  • Frontier AirlinesMon 16 Nov – Tue 17 Nov · Direct · 1h 57m $95
  • Frontier AirlinesThu 26 Nov – Mon 30 Nov · Direct · 2h 10m $101
  • Frontier AirlinesFri 27 Nov – Sun 29 Nov · 1 stop · 4h 13m $154
  • Frontier AirlinesMon 23 Nov – Tue 24 Nov · Direct · 2h 10m $165
  • Frontier AirlinesSat 14 Nov – Sun 15 Nov · 1 stop · 4h 03m $214
See all flights for these dates

Airports in Washington

  • IADDulles
  • DCAReagan National

Airports in Chicago

  • ORDO'Hare
  • MDWMidway

Watch this route

CHI
WAS

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More trips from Chicago

All flights from Chicago Washington to Chicago flights
Atlantafrom $79 Las Vegasfrom $129 TPAfrom $130 Los Angelesfrom $132 Phoenixfrom $136 MSPfrom $148 PHLfrom $163 FLLfrom $166

FAQ

Questions about this route

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Help center Contact us
01What is the cheapest month to fly from Chicago to Washington?

Based on recently found fares, November 2026 has the lowest price we know of, from $75. Prices change often, so check the calendar for current fares.

02Which airports serve Washington?

Washington is served by Dulles (IAD), Reagan National (DCA). Searching the city code compares all of them at once.

03Are the prices on this page final?

No. They are recently found fares. When you open a deal, the partner shows the live price, including taxes and fees, before you pay.

04How can I get an alert when flights to Washington get cheaper?

Use the price alert on this page. Choose your dates or a whole month and we will email you when the fare drops.