Cheap Flights from Denver to Southwest Houston

View €69 flight on Sat, 6 Sep 2025Opens in a new window

Popular airlines from Denver to Southwest Houston

  • Frontier Airlines

    Frontier Airlines

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Alaska Airlines

    Alaska Airlines

  • JetBlue Airways

    JetBlue Airways

  • 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 15% 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 Denver to Southwest Houston (DEN-HOU)

Prices were available within the past 7 days and start at €69 for one-way flights and €152 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 6 Sep - Sun, 7 Sep
DEN
Denver
IAH
Houston
€152 Return, found 5 days ago
€152
Return
found 5 days ago
Select American Airlines flight, departing Sat, 6 Sep from Denver to Houston, returning Sun, 7 Sep, priced at €152 found 5 days ago
American Airlines
Sat, 13 Sep - Mon, 15 Sep
DEN
Denver
IAH
Houston
€174 Return, found 4 hours ago
€174
Return
found 4 hours ago
Select American Airlines flight, departing Sat, 13 Sep from Denver to Houston, returning Mon, 15 Sep, priced at €174 found 4 hours ago
American Airlines
Sat, 30 Aug - Sun, 31 Aug
DEN
Denver
IAH
Houston
€175 Return, found 4 days ago
€175
Return
found 4 days ago
Select American Airlines flight, departing Sat, 30 Aug from Denver to Houston, returning Sun, 31 Aug, priced at €175 found 4 days ago
Delta
Sat, 6 Sep - Sun, 7 Sep
DEN
Denver
IAH
Houston
€178 Return, found 5 days ago
€178
Return
found 5 days ago
Select Delta flight, departing Sat, 6 Sep from Denver to Houston, returning Sun, 7 Sep, priced at €178 found 5 days ago
United
Sat, 6 Sep - Sun, 7 Sep
DEN
Denver
IAH
Houston
€183 Return, found 5 days ago
€183
Return
found 5 days ago
Select United flight, departing Sat, 6 Sep from Denver to Houston, returning Sun, 7 Sep, priced at €183 found 5 days ago
JetBlue Airways
Sat, 30 Aug - Sun, 31 Aug
DEN
Denver
IAH
Houston
€540 Return, found 4 days ago
€540
Return
found 4 days ago
Select JetBlue Airways flight, departing Sat, 30 Aug from Denver to Houston, returning Sun, 31 Aug, priced at €540 found 4 days ago

Find the cheapest month to fly from Denver (DEN) to Houston (IAH)

September is typically the cheapest month to fly

From €41 - €116 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.