United Flight UA2402 Deals & Information (2025/2026)

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United Flight 2402 Route Deals From $139

The cheapest prices found with in the last 7 days for return flights were $277 and $139 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 30 - Wed, Sep 10
SEA
Seattle - Tacoma Intl.
IAD
Washington Dulles Intl.
$277 Roundtrip, found 13 hours ago
$277
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Wed, Sep 10, priced at $277 found 13 hours ago
Wed, Aug 13 - Fri, Aug 15
SEA
Seattle - Tacoma Intl.
IAD
Washington Dulles Intl.
$293 Roundtrip, found 6 days ago
$293
Roundtrip
found 6 days ago
Select United flight, departing Wed, Aug 13 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Fri, Aug 15, priced at $293 found 6 days ago
Sat, Aug 30 - Wed, Sep 10
SEA
Seattle - Tacoma Intl.
IAD
Washington Dulles Intl.
$296 Roundtrip, found 13 hours ago
$296
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Wed, Sep 10, priced at $296 found 13 hours ago
Sat, Aug 30 - Wed, Sep 10
SEA
Seattle - Tacoma Intl.
IAD
Washington Dulles Intl.
$305 Roundtrip, found 13 hours ago
$305
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Wed, Sep 10, priced at $305 found 13 hours ago
Thu, Jul 31 - Thu, Aug 7
SEA
Seattle - Tacoma Intl.
IAD
Washington Dulles Intl.
$308 Roundtrip, found 1 day ago
$308
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jul 31 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Thu, Aug 7, priced at $308 found 1 day ago
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle - Tacoma Intl.
IAD
Washington Dulles Intl.
$315 Roundtrip, found 13 hours ago
$315
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sun, Aug 31, priced at $315 found 13 hours ago
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle - Tacoma Intl.
IAD
Washington Dulles Intl.
$324 Roundtrip, found 13 hours ago
$324
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sun, Aug 31, priced at $324 found 13 hours ago
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle - Tacoma Intl.
IAD
Washington Dulles Intl.
$325 Roundtrip, found 13 hours ago
$325
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sun, Aug 31, priced at $325 found 13 hours ago