United Flight WN1587 Deals & Information (2025/2026)

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United Flight 1587 Route Deals From $109

The cheapest prices found with in the last 7 days for return flights were $217 and $109 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 31 - Tue, Jun 3
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$217 Roundtrip, found 1 day ago
$217
Roundtrip
found 1 day ago
Select United flight, departing Sat, May 31 from Washington Dulles Intl. to Denver Intl., returning Tue, Jun 3, priced at $217 found 1 day ago
Tue, Jun 10 - Sat, Jun 14
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$221 Roundtrip, found 18 hours ago
$221
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Jun 10 from Washington Dulles Intl. to Denver Intl., returning Sat, Jun 14, priced at $221 found 18 hours ago
Sat, May 24 - Tue, May 27
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$230 Roundtrip, found 7 hours ago
$230
Roundtrip
found 7 hours ago
Select United flight, departing Sat, May 24 from Washington Dulles Intl. to Denver Intl., returning Tue, May 27, priced at $230 found 7 hours ago
Wed, May 21 - Sun, May 25
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$240 Roundtrip, found 9 hours ago
$240
Roundtrip
found 9 hours ago
Select United flight, departing Wed, May 21 from Washington Dulles Intl. to Denver Intl., returning Sun, May 25, priced at $240 found 9 hours ago
Tue, May 27 - Fri, Jun 6
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$248 Roundtrip, found 19 hours ago
$248
Roundtrip
found 19 hours ago
Select United flight, departing Tue, May 27 from Washington Dulles Intl. to Denver Intl., returning Fri, Jun 6, priced at $248 found 19 hours ago
Thu, Jun 26 - Tue, Jul 1
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$250 Roundtrip, found 17 hours ago
$250
Roundtrip
found 17 hours ago
Select United flight, departing Thu, Jun 26 from Washington Dulles Intl. to Denver Intl., returning Tue, Jul 1, priced at $250 found 17 hours ago
Tue, Jun 10 - Sat, Jun 14
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$252 Roundtrip, found 18 hours ago
$252
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Jun 10 from Washington Dulles Intl. to Denver Intl., returning Sat, Jun 14, priced at $252 found 18 hours ago
Fri, May 23 - Sun, May 25
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$256 Roundtrip, found 1 hour ago
$256
Roundtrip
found 1 hour ago
Select United flight, departing Fri, May 23 from Washington Dulles Intl. to Denver Intl., returning Sun, May 25, priced at $256 found 1 hour ago
Sat, May 17 - Sun, May 18
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$258 Roundtrip, found 1 day ago
$258
Roundtrip
found 1 day ago
Select United flight, departing Sat, May 17 from Washington Dulles Intl. to Denver Intl., returning Sun, May 18, priced at $258 found 1 day ago
Sun, Aug 24 - Sun, Aug 31
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$261 Roundtrip, found 4 days ago
$261
Roundtrip
found 4 days ago
Select United flight, departing Sun, Aug 24 from Washington Dulles Intl. to Denver Intl., returning Sun, Aug 31, priced at $261 found 4 days ago

Frequently asked questions

What route does flight number UA1587 take?
UA1587 operates from El Salvador Intl. Airport (SAL) to Houston Airport and is a direct flight. This service typically takes 3 hours and 5 minutes.
What kind of plane is on flight number UA1587?
The route for UA1587 is usually San Salvador Airport (SAL-El Salvador Intl.) to George Bush Intercontinental Airport (IAH), and the Boeing 737-900 is the aircraft model you’ll probably be traveling on.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA1587 flight with Travelocity, please visit our Customer Service Portal.