United Flight 2129 Deals & Information (2025/2026)

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United Flight 2129 Route Deals From $163

The cheapest prices found with in the last 7 days for return flights were $237 and $163 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Feb 10 - Tue, Feb 17
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$237 Roundtrip, found 2 hours ago
$237
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Feb 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Feb 17, priced at $237 found 2 hours ago
Tue, Feb 10 - Tue, Feb 17
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$240 Roundtrip, found 2 hours ago
$240
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Feb 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Feb 17, priced at $240 found 2 hours ago
Tue, Feb 10 - Tue, Feb 17
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$250 Roundtrip, found 2 hours ago
$250
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Feb 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Feb 17, priced at $250 found 2 hours ago
Tue, Feb 10 - Tue, Feb 17
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$272 Roundtrip, found 2 hours ago
$272
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Feb 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Feb 17, priced at $272 found 2 hours ago
Tue, Feb 10 - Tue, Feb 17
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$274 Roundtrip, found 2 hours ago
$274
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Feb 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Feb 17, priced at $274 found 2 hours ago
Tue, Feb 10 - Tue, Feb 17
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$280 Roundtrip, found 2 hours ago
$280
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Feb 10 from San Diego Intl. to Washington Dulles Intl., returning Tue, Feb 17, priced at $280 found 2 hours ago
Fri, Feb 27 - Sun, Mar 1
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$281 Roundtrip, found 1 day ago
$281
Roundtrip
found 1 day ago
Select United flight, departing Fri, Feb 27 from San Diego Intl. to Washington Dulles Intl., returning Sun, Mar 1, priced at $281 found 1 day ago
Fri, Jan 23 - Sun, Jan 25
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$283 Roundtrip, found 5 days ago
$283
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jan 23 from San Diego Intl. to Washington Dulles Intl., returning Sun, Jan 25, priced at $283 found 5 days ago
Thu, Feb 26 - Sat, Feb 28
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$285 Roundtrip, found 2 days ago
$285
Roundtrip
found 2 days ago
Select United flight, departing Thu, Feb 26 from San Diego Intl. to Washington Dulles Intl., returning Sat, Feb 28, priced at $285 found 2 days ago
Thu, Feb 26 - Sat, Feb 28
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$286 Roundtrip, found 2 days ago
$286
Roundtrip
found 2 days ago
Select United flight, departing Thu, Feb 26 from San Diego Intl. to Washington Dulles Intl., returning Sat, Feb 28, priced at $286 found 2 days ago
Fri, Feb 27 - Sun, Mar 1
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$291 Roundtrip, found 1 day ago
$291
Roundtrip
found 1 day ago
Select United flight, departing Fri, Feb 27 from San Diego Intl. to Washington Dulles Intl., returning Sun, Mar 1, priced at $291 found 1 day ago
Tue, May 12 - Mon, May 18
SAN
San Diego Intl.
IAD
Washington Dulles Intl.
$292 Roundtrip, found 2 days ago
$292
Roundtrip
found 2 days ago
Select United flight, departing Tue, May 12 from San Diego Intl. to Washington Dulles Intl., returning Mon, May 18, priced at $292 found 2 days ago