United Flight UA398 Deals & Information (2025/2026)

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United Flight 398 Route Deals From $65

The cheapest prices found with in the last 7 days for return flights were $91 and $65 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 11 - Sat, Nov 15
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$91 Roundtrip, found 1 day ago
$91
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 11 from Hopkins Intl. to O'Hare Intl., returning Sat, Nov 15, priced at $91 found 1 day ago
Fri, Oct 17 - Sun, Oct 19
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$97 Roundtrip, found 1 day ago
$97
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 17 from Hopkins Intl. to O'Hare Intl., returning Sun, Oct 19, priced at $97 found 1 day ago
Tue, Nov 11 - Sat, Nov 15
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$104 Roundtrip, found 1 day ago
$104
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 11 from Hopkins Intl. to O'Hare Intl., returning Sat, Nov 15, priced at $104 found 1 day ago
Mon, Aug 25 - Wed, Aug 27
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$106 Roundtrip, found 1 day ago
$106
Roundtrip
found 1 day ago
Select United flight, departing Mon, Aug 25 from Hopkins Intl. to O'Hare Intl., returning Wed, Aug 27, priced at $106 found 1 day ago
Fri, Sep 26 - Mon, Sep 29
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$106 Roundtrip, found 1 day ago
$106
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Hopkins Intl. to O'Hare Intl., returning Mon, Sep 29, priced at $106 found 1 day ago
Wed, Nov 12 - Sun, Nov 16
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$107 Roundtrip, found 1 day ago
$107
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 12 from Hopkins Intl. to O'Hare Intl., returning Sun, Nov 16, priced at $107 found 1 day ago
Fri, Sep 26 - Mon, Sep 29
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$108 Roundtrip, found 1 day ago
$108
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Hopkins Intl. to O'Hare Intl., returning Mon, Sep 29, priced at $108 found 1 day ago
Fri, Oct 17 - Sun, Oct 19
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$109 Roundtrip, found 1 day ago
$109
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 17 from Hopkins Intl. to O'Hare Intl., returning Sun, Oct 19, priced at $109 found 1 day ago
Mon, Aug 25 - Wed, Aug 27
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$112 Roundtrip, found 1 day ago
$112
Roundtrip
found 1 day ago
Select United flight, departing Mon, Aug 25 from Hopkins Intl. to O'Hare Intl., returning Wed, Aug 27, priced at $112 found 1 day ago
Mon, Aug 11 - Tue, Aug 12
CLE
Hopkins Intl.
ORD
O'Hare Intl.
$114 Roundtrip, found 2 days ago
$114
Roundtrip
found 2 days ago
Select United flight, departing Mon, Aug 11 from Hopkins Intl. to O'Hare Intl., returning Tue, Aug 12, priced at $114 found 2 days ago

Frequently asked questions

What route does flight number UA398 take?
UA398 flies directly from IAD to Miami Intl. Airport (MIA) in 2 hours and 45 minutes. It can sometimes be used on other routes though, some of which may be multi-stop flights. Keep an eye out for this when booking your airfare to avoid any confusion.
What kind of plane is on flight number UA398?
If you have a seat on flight UA398 from Washington Dulles Intl. Airport (IAD) to Miami, FL Airport (MIA-Miami Intl.), there's a good chance you'll be on board the Boeing 737-800. Flight UA398 serves multiple 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 UA398 flight with Travelocity, please visit our Customer Service Portal.