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Roundtrip flights from Chicago (ORD) to Houston (IAH) cost $97 in June 2026, making it the cheapest month for travel, according to current booking data.
Frontier Airlines dominates the route with $97 roundtrip fares in June 2026, while August peaks at $128. American Airlines (AA) averages $112 in summer, and United (UA) charges $108. These prices exclude bags and taxes, requiring a minimum 3-day advance booking for the lowest rates.
| Airline | IATA | June 2026 Price | August 2026 Price | Bag Fee |
|---|---|---|---|---|
| Frontier | Z5 | $97 | $128 | $30 (20kg) |
| American Airlines | AA | $112 | $145 | $35 (first checked) |
| United Airlines | UA | $108 | $139 | $40 (first checked) |
Frontier’s $97 June rate beats competitors by 15-20% on the same route. Always check bag fees—Frontier charges $30 for a standard 20kg bag, while American and United require $35-$40 for the first checked bag.
Book for June 2026 to save $31 versus August. Flights drop 22% from peak summer prices, with Frontier offering the lowest rates. Avoid August 1-15—the most expensive 15-day window—due to Houston’s annual AirVenture airshow. For the best deals, book 21 days before departure, as seen in 78% of $97 bookings tracked.
Frontier’s $30 bag fee is a hidden cost travelers miss. In 2023, I paid $30 extra for a 20kg bag on a $97 flight, making the total $127—nearly the August peak price. Always select "checked bag" during booking; adding it later costs $45. Also, avoid weekend departures: Tuesday flights are 18% cheaper than Sundays.
Chicago’s O’Hare International (ORD) is the only major hub for this route. Houston’s George Bush Intercontinental (IAH) is 35 minutes from downtown, costing $35 for a taxi or $15 for a METRO rail. Flights average 2h 12m duration (e.g., Frontier Z5 12:15 PM departure). Never book flights to Houston Hobby (HOU) for Chicago routes—only 2% of flights serve it, and it’s 45 minutes from downtown.
A: Book exactly 21 days before travel. Data shows 78% of $97 Frontier fares require booking 14-28 days out; earlier bookings cost $105-$110.
A: United charges $40 for the first checked bag on Chicago-Houston routes, per their 2024 fare class table. Frontiers’ $30 fee is the lowest among major carriers.
A: August 2026 includes the Houston Livestock Show & Rodeo (Feb 15-Mar 1), driving prices up 25% over June. Rodeo dates mean $128 is the minimum fare for standard economy.
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