United Flight 3420 Deals & Information (2026/2027)

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United Flight 3420 Route Deals From $239

The cheapest prices found with in the last 7 days for return flights were $239 and $239 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 24 - Tue, Sep 1
DLH
Duluth Intl.
ORD
O'Hare Intl.
$239 Roundtrip, found 5 days ago
$239
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 24 from Duluth Intl. to O'Hare Intl., returning Tue, Sep 1, priced at $239 found 5 days ago
Fri, May 8 - Sat, May 9
DLH
Duluth Intl.
ORD
O'Hare Intl.
$243 Roundtrip, found 11 hours ago
$243
Roundtrip
found 11 hours ago
Select United flight, departing Fri, May 8 from Duluth Intl. to O'Hare Intl., returning Sat, May 9, priced at $243 found 11 hours ago
Tue, Apr 21 - Sat, Apr 25
DLH
Duluth Intl.
ORD
O'Hare Intl.
$249 Roundtrip, found 4 days ago
$249
Roundtrip
found 4 days ago
Select United flight, departing Tue, Apr 21 from Duluth Intl. to O'Hare Intl., returning Sat, Apr 25, priced at $249 found 4 days ago
Tue, Oct 13 - Sat, Oct 17
DLH
Duluth Intl.
ORD
O'Hare Intl.
$254 Roundtrip, found 6 days ago
$254
Roundtrip
found 6 days ago
Select United flight, departing Tue, Oct 13 from Duluth Intl. to O'Hare Intl., returning Sat, Oct 17, priced at $254 found 6 days ago
Fri, May 8 - Sat, May 9
DLH
Duluth Intl.
ORD
O'Hare Intl.
$254 Roundtrip, found 11 hours ago
$254
Roundtrip
found 11 hours ago
Select United flight, departing Fri, May 8 from Duluth Intl. to O'Hare Intl., returning Sat, May 9, priced at $254 found 11 hours ago
Fri, May 1 - Mon, May 4
DLH
Duluth Intl.
ORD
O'Hare Intl.
$265 Roundtrip, found 5 days ago
$265
Roundtrip
found 5 days ago
Select United flight, departing Fri, May 1 from Duluth Intl. to O'Hare Intl., returning Mon, May 4, priced at $265 found 5 days ago
Tue, Oct 13 - Sat, Oct 17
DLH
Duluth Intl.
ORD
O'Hare Intl.
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select United flight, departing Tue, Oct 13 from Duluth Intl. to O'Hare Intl., returning Sat, Oct 17, priced at $269 found 6 days ago
Tue, Sep 22 - Sat, Sep 26
DLH
Duluth Intl.
ORD
O'Hare Intl.
$274 Roundtrip, found 6 days ago
$274
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 22 from Duluth Intl. to O'Hare Intl., returning Sat, Sep 26, priced at $274 found 6 days ago
Tue, Apr 14 - Sat, Apr 18
DLH
Duluth Intl.
ORD
O'Hare Intl.
$281 Roundtrip, found 4 days ago
$281
Roundtrip
found 4 days ago
Select United flight, departing Tue, Apr 14 from Duluth Intl. to O'Hare Intl., returning Sat, Apr 18, priced at $281 found 4 days ago
Fri, May 22 - Mon, May 25
DLH
Duluth Intl.
ORD
O'Hare Intl.
$282 Roundtrip, found 1 day ago
$282
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 22 from Duluth Intl. to O'Hare Intl., returning Mon, May 25, priced at $282 found 1 day ago
Thu, May 7 - Sat, May 9
DLH
Duluth Intl.
ORD
O'Hare Intl.
$288 Roundtrip, found 4 days ago
$288
Roundtrip
found 4 days ago
Select United flight, departing Thu, May 7 from Duluth Intl. to O'Hare Intl., returning Sat, May 9, priced at $288 found 4 days ago
Fri, May 8 - Sat, May 9
DLH
Duluth Intl.
ORD
O'Hare Intl.
$293 Roundtrip, found 11 hours ago
$293
Roundtrip
found 11 hours ago
Select United flight, departing Fri, May 8 from Duluth Intl. to O'Hare Intl., returning Sat, May 9, priced at $293 found 11 hours ago

Frequently asked questions

What route does flight number UA3420 take?
UA3420 is used on multiple routes, but the most common is between BWI Airport and ORD. If on a non-stop flight, you'll arrive in approximately 2 hours and 10 minutes. Multi-stop flights can also travel under this number, as can flights on other routes.
What kind of plane is on flight number UA3420?
If you've booked a seat on flight UA3420 from BWI Airport to O'Hare Airport, there's a strong chance you'll be heading off on an Embraer 170. This flight number serves a number of routes, but this is the most common one.
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 UA3420 flight with Travelocity, please visit our Customer Service Portal.