Cheap flights from Washington to Northwest Houston

View AU$152 flight on Sat, 1 Nov. 2025Opens in a new window

Popular airlines from Washington to Northwest Houston

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Washington (WAS) to Northwest Houston (HOU)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 8 Dec. - Thu, 11 Dec.
DCA
Washington
IAH
Houston
AU$604 Return, found 11 hours ago
AU$604
Return
found 11 hours ago
Select American Airlines flight, departing Mon, 8 Dec. from Washington to Houston, returning Thu, 11 Dec., priced at AU$604 found 11 hours ago
American Airlines
Sat, 2 Aug. - Tue, 5 Aug.
BWI
Baltimore
IAH
Houston
AU$609 Return, found 2 days ago
AU$609
Return
found 2 days ago
Select American Airlines flight, departing Sat, 2 Aug. from Baltimore to Houston, returning Tue, 5 Aug., priced at AU$609 found 2 days ago
American Airlines
Mon, 8 Dec. - Thu, 11 Dec.
DCA
Washington
IAH
Houston
AU$619 Return, found 11 hours ago
AU$619
Return
found 11 hours ago
Select American Airlines flight, departing Mon, 8 Dec. from Washington to Houston, returning Thu, 11 Dec., priced at AU$619 found 11 hours ago
American Airlines
Mon, 8 Dec. - Thu, 11 Dec.
DCA
Washington
IAH
Houston
AU$634 Return, found 11 hours ago
AU$634
Return
found 11 hours ago
Select American Airlines flight, departing Mon, 8 Dec. from Washington to Houston, returning Thu, 11 Dec., priced at AU$634 found 11 hours ago
United
Sat, 2 Aug. - Tue, 5 Aug.
BWI
Baltimore
IAH
Houston
AU$657 Return, found 2 days ago
AU$657
Return
found 2 days ago
Select United flight, departing Sat, 2 Aug. from Baltimore to Houston, returning Tue, 5 Aug., priced at AU$657 found 2 days ago
Delta
Sun, 22 Mar. - Thu, 26 Mar.
DCA
Washington
IAH
Houston
AU$660 Return, found 5 days ago
AU$660
Return
found 5 days ago
Select Delta flight, departing Sun, 22 Mar. from Washington to Houston, returning Thu, 26 Mar., priced at AU$660 found 5 days ago

Find the cheapest month to fly from Washington (WAS) to Houston (IAH)

September is typically the cheapest month to fly

From AU$125 - AU$328 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.