United Flight 788 Deals & Information (2026/2027)

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United Flight 788 Route Deals From $158

The cheapest prices found with in the last 7 days for return flights were $245 and $158 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 19 - Sat, Sep 26
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$245 Roundtrip, found 6 hours ago
$245
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Sep 19 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Sep 26, priced at $245 found 6 hours ago
Sat, Sep 19 - Sat, Sep 26
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$255 Roundtrip, found 6 hours ago
$255
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Sep 19 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Sep 26, priced at $255 found 6 hours ago
Thu, Sep 24 - Mon, Sep 28
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$270 Roundtrip, found 6 days ago
$270
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 24 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Mon, Sep 28, priced at $270 found 6 days ago
Sat, Sep 19 - Sat, Sep 26
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$279 Roundtrip, found 6 hours ago
$279
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Sep 19 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Sep 26, priced at $279 found 6 hours ago
Wed, Aug 19 - Sat, Aug 29
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$282 Roundtrip, found 1 day ago
$282
Roundtrip
found 1 day ago
Select United flight, departing Wed, Aug 19 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Aug 29, priced at $282 found 1 day ago
Sat, Aug 22 - Mon, Aug 31
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$283 Roundtrip, found 4 days ago
$283
Roundtrip
found 4 days ago
Select United flight, departing Sat, Aug 22 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Mon, Aug 31, priced at $283 found 4 days ago
Wed, Aug 26 - Tue, Sep 1
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$284 Roundtrip, found 11 hours ago
$284
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Aug 26 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Tue, Sep 1, priced at $284 found 11 hours ago
Tue, Sep 22 - Sat, Sep 26
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$285 Roundtrip, found 3 days ago
$285
Roundtrip
found 3 days ago
Select United flight, departing Tue, Sep 22 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Sep 26, priced at $285 found 3 days ago
Sat, Sep 5 - Sat, Sep 19
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$287 Roundtrip, found 20 hours ago
$287
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Sep 5 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Sep 19, priced at $287 found 20 hours ago
Wed, Aug 26 - Tue, Sep 1
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$289 Roundtrip, found 11 hours ago
$289
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Aug 26 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Tue, Sep 1, priced at $289 found 11 hours ago
Sat, Aug 15 - Sat, Aug 22
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$292 Roundtrip, found 12 hours ago
$292
Roundtrip
found 12 hours ago
Select United flight, departing Sat, Aug 15 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Aug 22, priced at $292 found 12 hours ago
Sat, Sep 5 - Sat, Sep 19
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$295 Roundtrip, found 20 hours ago
$295
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Sep 5 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Sep 19, priced at $295 found 20 hours ago
Sat, Sep 5 - Sat, Sep 19
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$298 Roundtrip, found 20 hours ago
$298
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Sep 5 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Sep 19, priced at $298 found 20 hours ago

Frequently asked questions

What route does flight number UA788 take?
UA788 is used on multiple routes, but the most common is between Nashville Intl. Airport (BNA) and Houston Airport. If your flight is direct, you'll disembark the plane in around 2 hours and 6 minutes. Multi-stop flights can also use the same number, as can services on other routes.
What kind of plane is on flight number UA788?
You're likely to travel aboard the Boeing 737-700 if you're taking flight number UA788 from Nashville Intl. Airport (BNA) to Houston, TX Airport (IAH-George Bush Intercontinental). This is the most commonly used aircraft type on this popular route.
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 UA788 flight with Travelocity, please visit our Customer Service Portal.