Airline Guides

Airlines: Hubs, Baggage & Booking Guides

Hub airports, baggage rules, check-in options, seat classes and cancellation policies for the major carriers TheTravelValley compares fares across.

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Frequently Asked Questions: Global Airline Logistics

What are the main functional benefits of booking an alliance-affiliated airline?

Alliances like Star Alliance, Oneworld or SkyTeam coordinate flight schedules to minimize layover windows, link baggage handling across connecting flights, and let you accumulate frequent flyer miles within a centralized loyalty account.

How does a codeshare flight agreement affect my day-of-travel check-in process?

You must check in directly with the operating carrier — the airline actually flying the plane — rather than the brand you purchased the ticket from. See our Codeshare Flights Explained guide.

Why do transatlantic Basic Economy or Light fares often lose their cost advantage?

Once you add a checked suitcase, select a seat, or pay a schedule-change penalty fee, the total cost of a "Basic" or "Light" fare frequently surpasses standard economy pricing — see our Basic Economy vs Standard Economy guide.

What happens if I miss my connection because my first flight was delayed?

If your itinerary is on a single, unified ticket, the airline that caused the delay is legally responsible for rebooking you onto the next available flight at no extra cost. Read our Flight Delay & Cancellation Rights guide.

Is it possible to use airline miles to upgrade a flight booked through a partner carrier?

Yes — global alliance cross-functionality lets you request cabin upgrades on eligible partner flights, though availability depends on fare class codes and seat buckets. See Is Priority Boarding and Cabin Upgrades Worth It?

How long before my scheduled departure does the airline check-in window close?

For standard US domestic departures, check-in and baggage drop close 45 minutes before takeoff; for international long-haul routes, the cutoff extends to 60 minutes.

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