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✦ Traveler Tools

Airline Online Check-In
Complete Guide

Checking in online saves time, lets you pick your seat, and secures your boarding pass before you even leave home. Here's everything you need to know about online check-in for all major U.S. airlines.

✅ All U.S. airlines📅 Check-in windows🪑 Seat selection tips
Home›Airline Online Check-In Guide

✅ Why Check In Online?

  • ⏱️
    Save time: Skip the check-in counter and go straight to security
  • 🪑
    Choose your seat: Online check-in unlocks seat selection for free on many airlines
  • 📱
    Mobile boarding pass: Download to your phone — no paper needed
  • 🥇
    Better boarding position: Southwest uses a first-come, first-served boarding position system — check in exactly at T-24 hours for the best spot
  • 🧳
    Prepay baggage: Add and pay for checked bags online, often cheaper than at the airport

⏰ Online Check-In Windows by Airline

AirlineCheck-In OpensCheck-In ClosesCheck In Now
American Airlines24 hours before departure45 min before departureaa.com/checkin
Delta Air Lines24 hours before departure30 min before departuredelta.com/check-in
United Airlines24 hours before departure45 min before departureunited.com/checkin
Southwest Airlines24 hours before departure30 min before departuresouthwest.com/check-in
JetBlue Airways24 hours before departure30 min before departurejetblue.com/check-in
Alaska Airlines24 hours before departure30 min before departurealaskaair.com/check-in
Spirit Airlines24 hours before departure45 min before departurespirit.com/check-in
Frontier Airlines24 hours before departure35 min before departureflyfrontier.com/check-in
Hawaiian Airlines24 hours before departure30 min before departurehawaiianairlines.com
Allegiant Air24 hours before departure45 min before departureallegiantair.com/check-in

* Links go directly to airline websites. Check-in windows are subject to change. Verify on the airline's site before travel.

📋 Step-by-Step Check-In Guide

1
⏰
Check in at T-24
Set an alarm for exactly 24 hours before your departure time. Check in the moment the window opens, especially on Southwest.
2
🪑
Select your seat
Choose your preferred seat from the seat map. On many airlines, specific seats (aisle, window, exit row) become available at check-in.
3
📱
Get your boarding pass
Download to Apple Wallet or Google Pay, or screenshot as backup. Print a paper copy if you prefer.

❓ What If You Can't Check In Online?

If online check-in fails, it's often because of one of these reasons:

  • Name mismatch: Your booking name doesn't match your ID — contact Xpedioair to correct it now
  • TSA Secure Flight not verified: The airline needs your date of birth and gender — update these in the airline's app or website
  • Outstanding balance: Unpaid baggage fees or seat upgrades may block check-in
  • Passport required: International flights require passport verification at the counter
  • Technical error: Try a different browser or the airline's mobile app

❓ Frequently Asked Questions

All major U.S. airlines open online check-in exactly 24 hours before your scheduled departure time. For Southwest, checking in right at the 24-hour mark is especially important as it determines your boarding position (A, B, or C group).
Yes, once Xpedioair confirms your name correction is complete and the airline has updated your record, you should be able to check in normally. If you experience issues after a name correction, call us at +1-888-408-9070.
No — all major U.S. airlines accept mobile boarding passes from their apps. Apple Wallet and Google Pay integration is available for most airlines. A printed pass is always a good backup for international connections.
You can still check in at the airport counter or kiosk. However, you may have a reduced seat selection and may end up in a middle seat. Southwest passengers miss their boarding position advantage. Arrive earlier than usual to allow time for counter check-in.
Fix your flight now
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+1-888-408-9070
Mon–Sun · 6 AM–11 PM ET
→ Fix a Name Before Check-inBack to Home
⏰Check in exactly at T-24 for best seats
📱Download boarding pass to your phone
✅Verify your name matches your ID
🧳Prepay bags online — usually cheaper
Related Pages
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