United Flight 3665 Deals & Information (2025/2026)

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United Flight 3665 Route Deals From $113

The cheapest prices found with in the last 7 days for return flights were $189 and $113 for one-way flights to Indianapolis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 30 - Wed, Sep 3
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$189 Roundtrip, found 16 hours ago
$189
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Aug 30 from Washington Dulles Intl. to Indianapolis Intl., returning Wed, Sep 3, priced at $189 found 16 hours ago
Fri, Aug 15 - Sun, Aug 17
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$193 Roundtrip, found 6 hours ago
$193
Roundtrip
found 6 hours ago
Select United flight, departing Fri, Aug 15 from Washington Dulles Intl. to Indianapolis Intl., returning Sun, Aug 17, priced at $193 found 6 hours ago
Sat, Aug 30 - Wed, Sep 3
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$194 Roundtrip, found 16 hours ago
$194
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Aug 30 from Washington Dulles Intl. to Indianapolis Intl., returning Wed, Sep 3, priced at $194 found 16 hours ago
Sat, Jul 19 - Thu, Jul 24
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$198 Roundtrip, found 3 days ago
$198
Roundtrip
found 3 days ago
Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Indianapolis Intl., returning Thu, Jul 24, priced at $198 found 3 days ago
Sat, Jul 12 - Wed, Jul 16
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$198 Roundtrip, found 6 days ago
$198
Roundtrip
found 6 days ago
Select United flight, departing Sat, Jul 12 from Washington Dulles Intl. to Indianapolis Intl., returning Wed, Jul 16, priced at $198 found 6 days ago
Sat, Aug 30 - Wed, Sep 3
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$199 Roundtrip, found 16 hours ago
$199
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Aug 30 from Washington Dulles Intl. to Indianapolis Intl., returning Wed, Sep 3, priced at $199 found 16 hours ago
Fri, Aug 8 - Mon, Aug 11
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$202 Roundtrip, found 2 days ago
$202
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 8 from Washington Dulles Intl. to Indianapolis Intl., returning Mon, Aug 11, priced at $202 found 2 days ago
Thu, Jul 3 - Thu, Jul 10
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$204 Roundtrip, found 4 days ago
$204
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jul 3 from Washington Dulles Intl. to Indianapolis Intl., returning Thu, Jul 10, priced at $204 found 4 days ago
Sat, Jul 19 - Thu, Jul 24
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$208 Roundtrip, found 3 days ago
$208
Roundtrip
found 3 days ago
Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Indianapolis Intl., returning Thu, Jul 24, priced at $208 found 3 days ago
Thu, Jul 3 - Thu, Jul 10
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$208 Roundtrip, found 4 days ago
$208
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jul 3 from Washington Dulles Intl. to Indianapolis Intl., returning Thu, Jul 10, priced at $208 found 4 days ago
Thu, Jul 3 - Thu, Jul 10
IAD
Washington Dulles Intl.
IND
Indianapolis Intl.
$213 Roundtrip, found 4 days ago
$213
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jul 3 from Washington Dulles Intl. to Indianapolis Intl., returning Thu, Jul 10, priced at $213 found 4 days ago

Frequently asked questions

What route does flight number UA3665 take?
UA3665 is used on a range of routes. Most commonly, UA3665 flies direct from ORD to Kansas City, MO Airport (MCI-Kansas City Intl.). If that's your flight path, you'll be flying for around 1 hour and 41 minutes.
What terminal does UA3665 fly out of?
Terminal 2 is the terminal you'll likely take off from if you're booked on a flight from O'Hare Airport. ORD to Kansas City, MO Airport (MCI-Kansas City Intl.) is the most commonly traveled route for flight number UA3665.
What kind of plane is on flight number UA3665?
UA3665 is a flight number that serves several routes. If you're heading off on the most popular route, O'Hare Airport to Kansas City, MO Airport (MCI-Kansas City Intl.), there's a good chance you'll be climbing on board an Embraer 170.
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 UA3665 flight with Travelocity, please visit our Customer Service Portal.