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

  • Delta

    Delta

  • American Airlines

    American Airlines

  • 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, 1 Sep. - Mon, 8 Sep.
BWI
Baltimore
IAH
Houston
AU$363 Return, found 5 days ago
AU$363
Return
found 5 days ago
Select American Airlines flight, departing Mon, 1 Sep. from Baltimore to Houston, returning Mon, 8 Sep., priced at AU$363 found 5 days ago
United
Mon, 1 Sep. - Mon, 8 Sep.
BWI
Baltimore
IAH
Houston
AU$380 Return, found 5 days ago
AU$380
Return
found 5 days ago
Select United flight, departing Mon, 1 Sep. from Baltimore to Houston, returning Mon, 8 Sep., priced at AU$380 found 5 days ago
United
Mon, 1 Sep. - Mon, 8 Sep.
BWI
Baltimore
IAH
Houston
AU$395 Return, found 5 days ago
AU$395
Return
found 5 days ago
Select United flight, departing Mon, 1 Sep. from Baltimore to Houston, returning Mon, 8 Sep., priced at AU$395 found 5 days ago
American Airlines
Mon, 1 Sep. - Mon, 8 Sep.
DCA
Washington
IAH
Houston
AU$398 Return, found 5 days ago
AU$398
Return
found 5 days ago
Select American Airlines flight, departing Mon, 1 Sep. from Washington to Houston, returning Mon, 8 Sep., priced at AU$398 found 5 days ago
United
Mon, 1 Sep. - Mon, 8 Sep.
DCA
Washington
IAH
Houston
AU$404 Return, found 5 days ago
AU$404
Return
found 5 days ago
Select United flight, departing Mon, 1 Sep. from Washington to Houston, returning Mon, 8 Sep., priced at AU$404 found 5 days ago
Delta
Mon, 1 Sep. - Mon, 8 Sep.
DCA
Washington
IAH
Houston
AU$427 Return, found 5 days ago
AU$427
Return
found 5 days ago
Select Delta flight, departing Mon, 1 Sep. from Washington to Houston, returning Mon, 8 Sep., priced at AU$427 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.