United Flight 3688 Deals & Information (2026/2027)

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United Flight 3688 Route Deals From $90

The cheapest prices found with in the last 7 days for return flights were $159 and $90 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, May 19 - Wed, May 20
LGA
LaGuardia
IAD
Washington Dulles Intl.
$159 Roundtrip, found 6 days ago
$159
Roundtrip
found 6 days ago
Select United flight, departing Tue, May 19 from LaGuardia to Washington Dulles Intl., returning Wed, May 20, priced at $159 found 6 days ago
Tue, Apr 14 - Wed, Apr 15
LGA
LaGuardia
IAD
Washington Dulles Intl.
$169 Roundtrip, found 5 days ago
$169
Roundtrip
found 5 days ago
Select United flight, departing Tue, Apr 14 from LaGuardia to Washington Dulles Intl., returning Wed, Apr 15, priced at $169 found 5 days ago
Sat, Apr 18 - Sun, Apr 19
LGA
LaGuardia
IAD
Washington Dulles Intl.
$179 Roundtrip, found 3 days ago
$179
Roundtrip
found 3 days ago
Select United flight, departing Sat, Apr 18 from LaGuardia to Washington Dulles Intl., returning Sun, Apr 19, priced at $179 found 3 days ago
Fri, May 8 - Mon, May 11
LGA
LaGuardia
IAD
Washington Dulles Intl.
$189 Roundtrip, found 1 day ago
$189
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 8 from LaGuardia to Washington Dulles Intl., returning Mon, May 11, priced at $189 found 1 day ago
Fri, Apr 24 - Mon, Apr 27
LGA
LaGuardia
IAD
Washington Dulles Intl.
$214 Roundtrip, found 14 hours ago
$214
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Apr 24 from LaGuardia to Washington Dulles Intl., returning Mon, Apr 27, priced at $214 found 14 hours ago
Fri, Mar 27 - Fri, Apr 3
LGA
LaGuardia
IAD
Washington Dulles Intl.
$216 Roundtrip, found 5 days ago
$216
Roundtrip
found 5 days ago
Select United flight, departing Fri, Mar 27 from LaGuardia to Washington Dulles Intl., returning Fri, Apr 3, priced at $216 found 5 days ago
Tue, May 19 - Wed, May 20
LGA
LaGuardia
IAD
Washington Dulles Intl.
$219 Roundtrip, found 6 days ago
$219
Roundtrip
found 6 days ago
Select United flight, departing Tue, May 19 from LaGuardia to Washington Dulles Intl., returning Wed, May 20, priced at $219 found 6 days ago
Tue, Apr 14 - Wed, Apr 15
LGA
LaGuardia
IAD
Washington Dulles Intl.
$222 Roundtrip, found 5 days ago
$222
Roundtrip
found 5 days ago
Select United flight, departing Tue, Apr 14 from LaGuardia to Washington Dulles Intl., returning Wed, Apr 15, priced at $222 found 5 days ago
Tue, Apr 14 - Wed, Apr 15
LGA
LaGuardia
IAD
Washington Dulles Intl.
$225 Roundtrip, found 5 days ago
$225
Roundtrip
found 5 days ago
Select United flight, departing Tue, Apr 14 from LaGuardia to Washington Dulles Intl., returning Wed, Apr 15, priced at $225 found 5 days ago
Sun, Apr 5 - Wed, Apr 8
LGA
LaGuardia
IAD
Washington Dulles Intl.
$226 Roundtrip, found 17 hours ago
$226
Roundtrip
found 17 hours ago
Select United flight, departing Sun, Apr 5 from LaGuardia to Washington Dulles Intl., returning Wed, Apr 8, priced at $226 found 17 hours ago
Fri, Mar 27 - Tue, Apr 7
LGA
LaGuardia
IAD
Washington Dulles Intl.
$237 Roundtrip, found 7 hours ago
$237
Roundtrip
found 7 hours ago
Select United flight, departing Fri, Mar 27 from LaGuardia to Washington Dulles Intl., returning Tue, Apr 7, priced at $237 found 7 hours ago
Sat, Apr 18 - Sun, Apr 19
LGA
LaGuardia
IAD
Washington Dulles Intl.
$239 Roundtrip, found 3 days ago
$239
Roundtrip
found 3 days ago
Select United flight, departing Sat, Apr 18 from LaGuardia to Washington Dulles Intl., returning Sun, Apr 19, priced at $239 found 3 days ago

Frequently asked questions

What route does flight number UA3688 take?
UA3688 takes around 3 hours and 5 minutes to fly straight from SRQ Airport to O'Hare Intl. Airport (ORD). We all know there's magic in the destination, but the journey is always half the fun!
What kind of plane is on flight number UA3688?
The route for flight number UA3688 is almost always Sarasota, FL Airport (SRQ-Sarasota-Bradenton Intl.) to O'Hare Intl. Airport (ORD), and the Embraer 175 is the aircraft model you're likely to be traveling aboard.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA3688 flight with Travelocity, please visit our Customer Service Portal.