United Flight 3689 Deals & Information (2026/2027)

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United Flight 3689 Route Deals From $72

The cheapest prices found with in the last 7 days for return flights were $127 and $72 for one-way flights to LaGuardia for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 8 - Sat, May 9
IAD
Washington Dulles Intl.
LGA
LaGuardia
$127 Roundtrip, found 4 days ago
$127
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 8 from Washington Dulles Intl. to LaGuardia, returning Sat, May 9, priced at $127 found 4 days ago
Fri, May 8 - Sat, May 9
IAD
Washington Dulles Intl.
LGA
LaGuardia
$137 Roundtrip, found 4 days ago
$137
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 8 from Washington Dulles Intl. to LaGuardia, returning Sat, May 9, priced at $137 found 4 days ago
Tue, Jun 2 - Sat, Jun 6
IAD
Washington Dulles Intl.
LGA
LaGuardia
$139 Roundtrip, found 1 day ago
$139
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jun 2 from Washington Dulles Intl. to LaGuardia, returning Sat, Jun 6, priced at $139 found 1 day ago
Thu, Apr 16 - Sun, Apr 19
IAD
Washington Dulles Intl.
LGA
LaGuardia
$140 Roundtrip, found 5 days ago
$140
Roundtrip
found 5 days ago
Select United flight, departing Thu, Apr 16 from Washington Dulles Intl. to LaGuardia, returning Sun, Apr 19, priced at $140 found 5 days ago
Thu, Apr 16 - Sat, Apr 18
IAD
Washington Dulles Intl.
LGA
LaGuardia
$142 Roundtrip, found 1 day ago
$142
Roundtrip
found 1 day ago
Select United flight, departing Thu, Apr 16 from Washington Dulles Intl. to LaGuardia, returning Sat, Apr 18, priced at $142 found 1 day ago
Fri, Apr 17 - Sat, Apr 18
IAD
Washington Dulles Intl.
LGA
LaGuardia
$144 Roundtrip, found 1 day ago
$144
Roundtrip
found 1 day ago
Select United flight, departing Fri, Apr 17 from Washington Dulles Intl. to LaGuardia, returning Sat, Apr 18, priced at $144 found 1 day ago
Wed, Jun 3 - Sun, Jun 7
IAD
Washington Dulles Intl.
LGA
LaGuardia
$154 Roundtrip, found 1 day ago
$154
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jun 3 from Washington Dulles Intl. to LaGuardia, returning Sun, Jun 7, priced at $154 found 1 day ago
Mon, Aug 3 - Fri, Aug 7
IAD
Washington Dulles Intl.
LGA
LaGuardia
$159 Roundtrip, found 3 days ago
$159
Roundtrip
found 3 days ago
Select United flight, departing Mon, Aug 3 from Washington Dulles Intl. to LaGuardia, returning Fri, Aug 7, priced at $159 found 3 days ago
Fri, May 8 - Sat, May 9
IAD
Washington Dulles Intl.
LGA
LaGuardia
$162 Roundtrip, found 4 days ago
$162
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 8 from Washington Dulles Intl. to LaGuardia, returning Sat, May 9, priced at $162 found 4 days ago
Thu, Apr 16 - Sat, Apr 18
IAD
Washington Dulles Intl.
LGA
LaGuardia
$164 Roundtrip, found 1 day ago
$164
Roundtrip
found 1 day ago
Select United flight, departing Thu, Apr 16 from Washington Dulles Intl. to LaGuardia, returning Sat, Apr 18, priced at $164 found 1 day ago
Fri, May 8 - Sat, May 9
IAD
Washington Dulles Intl.
LGA
LaGuardia
$169 Roundtrip, found 4 days ago
$169
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 8 from Washington Dulles Intl. to LaGuardia, returning Sat, May 9, priced at $169 found 4 days ago
Fri, Apr 17 - Sat, Apr 25
IAD
Washington Dulles Intl.
LGA
LaGuardia
$170 Roundtrip, found 3 days ago
$170
Roundtrip
found 3 days ago
Select United flight, departing Fri, Apr 17 from Washington Dulles Intl. to LaGuardia, returning Sat, Apr 25, priced at $170 found 3 days ago
Tue, Jun 2 - Sat, Jun 6
IAD
Washington Dulles Intl.
LGA
LaGuardia
$173 Roundtrip, found 1 day ago
$173
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jun 2 from Washington Dulles Intl. to LaGuardia, returning Sat, Jun 6, priced at $173 found 1 day ago