United Flight UA2129 Deals & Information (2025/2026)

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United Flight 2129 Route Deals From $119

The cheapest prices found with in the last 7 days for return flights were $237 and $119 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 10 - Tue, Sep 16
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $237 found 2 days ago
Wed, Sep 10 - Tue, Sep 16
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$241 Roundtrip, found 2 days ago
$241
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $241 found 2 days ago
Tue, Sep 2 - Sat, Sep 6
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$243 Roundtrip, found 2 days ago
$243
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 2 from San Diego Intl. to Washington Dulles Intl., returning Sat, Sep 6, priced at $243 found 2 days ago
Wed, Sep 10 - Tue, Sep 16
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$247 Roundtrip, found 2 days ago
$247
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $247 found 2 days ago
Wed, Sep 10 - Tue, Sep 16
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$251 Roundtrip, found 2 days ago
$251
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $251 found 2 days ago
Thu, Oct 2 - Sat, Oct 11
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$267 Roundtrip, found 4 days ago
$267
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 2 from San Diego Intl. to Washington Dulles Intl., returning Sat, Oct 11, priced at $267 found 4 days ago
Sun, Sep 14 - Sat, Sep 20
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$267 Roundtrip, found 16 hours ago
$267
Roundtrip
found 16 hours ago
Select United flight, departing Sun, Sep 14 from San Diego Intl. to Washington Dulles Intl., returning Sat, Sep 20, priced at $267 found 16 hours ago
Wed, Sep 10 - Tue, Sep 16
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$275 Roundtrip, found 2 days ago
$275
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $275 found 2 days ago
Wed, Sep 10 - Tue, Sep 16
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $279 found 2 days ago
Wed, Sep 10 - Tue, Sep 16
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$285 Roundtrip, found 2 days ago
$285
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $285 found 2 days ago
Thu, Oct 2 - Sat, Oct 11
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$285 Roundtrip, found 4 days ago
$285
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 2 from San Diego Intl. to Washington Dulles Intl., returning Sat, Oct 11, priced at $285 found 4 days ago
Sun, Sep 14 - Thu, Sep 18
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$287 Roundtrip, found 12 hours ago
$287
Roundtrip
found 12 hours ago
Select United flight, departing Sun, Sep 14 from San Diego Intl. to Washington Dulles Intl., returning Thu, Sep 18, priced at $287 found 12 hours ago
Thu, Oct 2 - Sat, Oct 11
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$291 Roundtrip, found 4 days ago
$291
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 2 from San Diego Intl. to Washington Dulles Intl., returning Sat, Oct 11, priced at $291 found 4 days ago