United Flight AA3690 Deals & Information (2025/2026)

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United Flight 3690 Route Deals From $70

The cheapest prices found with in the last 7 days for return flights were $140 and $70 for one-way flights to Indianapolis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 5 - Wed, Aug 6
ORD
O'Hare Intl.
IND
Indianapolis Intl.
$140 Roundtrip, found 5 days ago
$140
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 5 from O'Hare Intl. to Indianapolis Intl., returning Wed, Aug 6, priced at $140 found 5 days ago
Mon, Sep 15 - Fri, Sep 19
ORD
O'Hare Intl.
IND
Indianapolis Intl.
$186 Roundtrip, found 1 day ago
$186
Roundtrip
found 1 day ago
Select United flight, departing Mon, Sep 15 from O'Hare Intl. to Indianapolis Intl., returning Fri, Sep 19, priced at $186 found 1 day ago
Tue, Aug 5 - Wed, Aug 6
ORD
O'Hare Intl.
IND
Indianapolis Intl.
$201 Roundtrip, found 5 days ago
$201
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 5 from O'Hare Intl. to Indianapolis Intl., returning Wed, Aug 6, priced at $201 found 5 days ago
Fri, Aug 22 - Sat, Aug 23
ORD
O'Hare Intl.
IND
Indianapolis Intl.
$205 Roundtrip, found 6 days ago
$205
Roundtrip
found 6 days ago
Select United flight, departing Fri, Aug 22 from O'Hare Intl. to Indianapolis Intl., returning Sat, Aug 23, priced at $205 found 6 days ago
Fri, Aug 22 - Sat, Aug 23
ORD
O'Hare Intl.
IND
Indianapolis Intl.
$209 Roundtrip, found 6 days ago
$209
Roundtrip
found 6 days ago
Select United flight, departing Fri, Aug 22 from O'Hare Intl. to Indianapolis Intl., returning Sat, Aug 23, priced at $209 found 6 days ago
Tue, Aug 5 - Wed, Aug 6
ORD
O'Hare Intl.
IND
Indianapolis Intl.
$213 Roundtrip, found 5 days ago
$213
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 5 from O'Hare Intl. to Indianapolis Intl., returning Wed, Aug 6, priced at $213 found 5 days ago
Tue, Aug 5 - Wed, Aug 6
ORD
O'Hare Intl.
IND
Indianapolis Intl.
$232 Roundtrip, found 5 days ago
$232
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 5 from O'Hare Intl. to Indianapolis Intl., returning Wed, Aug 6, priced at $232 found 5 days ago
Mon, Sep 15 - Fri, Sep 19
ORD
O'Hare Intl.
IND
Indianapolis Intl.
$253 Roundtrip, found 1 day ago
$253
Roundtrip
found 1 day ago
Select United flight, departing Mon, Sep 15 from O'Hare Intl. to Indianapolis Intl., returning Fri, Sep 19, priced at $253 found 1 day ago