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| Depart | Return | Price | Airline |
|---|---|---|---|
| Sep 03 | Sep 06 |
$769
|
American Airlines
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| Depart | Return | Price | Airline |
|---|
| Depart | Return | Price | Airline |
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The cheapest flights from Ottawa to Chicago-OHare could be connecting flights on United Airlines, USAirways, Westjet Airlines. Sometimes the cheapest airfare from Ottawa to Chicago-OHare is with interline flight options (two different airlines)included in our search.
