United Flight 3689 Deals & Information (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 3689 Route Deals From $110

The cheapest prices found with in the last 7 days for return flights were $189 and $110 for one-way flights to LaGuardia for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, May 12 - Wed, May 13
IAD
Washington Dulles Intl.
LGA
LaGuardia
$189 Roundtrip, found 1 day ago
$189
Roundtrip
found 1 day ago
Select United flight, departing Tue, May 12 from Washington Dulles Intl. to LaGuardia, returning Wed, May 13, priced at $189 found 1 day ago
Fri, Apr 17 - Sun, Apr 19
IAD
Washington Dulles Intl.
LGA
LaGuardia
$191 Roundtrip, found 2 days ago
$191
Roundtrip
found 2 days ago
Select United flight, departing Fri, Apr 17 from Washington Dulles Intl. to LaGuardia, returning Sun, Apr 19, priced at $191 found 2 days ago
Tue, Mar 31 - Thu, Apr 30
IAD
Washington Dulles Intl.
LGA
LaGuardia
$200 Roundtrip, found 2 days ago
$200
Roundtrip
found 2 days ago
Select United flight, departing Tue, Mar 31 from Washington Dulles Intl. to LaGuardia, returning Thu, Apr 30, priced at $200 found 2 days ago
Sat, Aug 29 - Fri, Sep 4
IAD
Washington Dulles Intl.
LGA
LaGuardia
$210 Roundtrip, found 5 days ago
$210
Roundtrip
found 5 days ago
Select United flight, departing Sat, Aug 29 from Washington Dulles Intl. to LaGuardia, returning Fri, Sep 4, priced at $210 found 5 days ago
Thu, May 14 - Sat, May 16
IAD
Washington Dulles Intl.
LGA
LaGuardia
$216 Roundtrip, found 7 hours ago
$216
Roundtrip
found 7 hours ago
Select United flight, departing Thu, May 14 from Washington Dulles Intl. to LaGuardia, returning Sat, May 16, priced at $216 found 7 hours ago
Tue, May 12 - Wed, May 13
IAD
Washington Dulles Intl.
LGA
LaGuardia
$221 Roundtrip, found 1 day ago
$221
Roundtrip
found 1 day ago
Select United flight, departing Tue, May 12 from Washington Dulles Intl. to LaGuardia, returning Wed, May 13, priced at $221 found 1 day ago
Tue, Jun 16 - Sat, Jun 20
IAD
Washington Dulles Intl.
LGA
LaGuardia
$234 Roundtrip, found 1 day ago
$234
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jun 16 from Washington Dulles Intl. to LaGuardia, returning Sat, Jun 20, priced at $234 found 1 day ago
Thu, May 14 - Sat, May 16
IAD
Washington Dulles Intl.
LGA
LaGuardia
$236 Roundtrip, found 7 hours ago
$236
Roundtrip
found 7 hours ago
Select United flight, departing Thu, May 14 from Washington Dulles Intl. to LaGuardia, returning Sat, May 16, priced at $236 found 7 hours ago
Thu, Apr 30 - Fri, May 1
IAD
Washington Dulles Intl.
LGA
LaGuardia
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 30 from Washington Dulles Intl. to LaGuardia, returning Fri, May 1, priced at $237 found 2 days ago
Sat, Aug 29 - Fri, Sep 4
IAD
Washington Dulles Intl.
LGA
LaGuardia
$241 Roundtrip, found 5 days ago
$241
Roundtrip
found 5 days ago
Select United flight, departing Sat, Aug 29 from Washington Dulles Intl. to LaGuardia, returning Fri, Sep 4, priced at $241 found 5 days ago
Fri, Apr 17 - Sun, Apr 19
IAD
Washington Dulles Intl.
LGA
LaGuardia
$243 Roundtrip, found 2 days ago
$243
Roundtrip
found 2 days ago
Select United flight, departing Fri, Apr 17 from Washington Dulles Intl. to LaGuardia, returning Sun, Apr 19, priced at $243 found 2 days ago
Tue, May 12 - Wed, May 13
IAD
Washington Dulles Intl.
LGA
LaGuardia
$252 Roundtrip, found 1 day ago
$252
Roundtrip
found 1 day ago
Select United flight, departing Tue, May 12 from Washington Dulles Intl. to LaGuardia, returning Wed, May 13, priced at $252 found 1 day ago
Fri, Jul 10 - Sun, Jul 12
IAD
Washington Dulles Intl.
LGA
LaGuardia
$261 Roundtrip, found 3 hours ago
$261
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Jul 10 from Washington Dulles Intl. to LaGuardia, returning Sun, Jul 12, priced at $261 found 3 hours ago