This post contains references to products from one or more of our advertisers. We may receive compensation when you click on links to those products. For an explanation of our Advertising Policy, visit this page.

TPG reader Jenny sent me a message on Facebook to ask about boarding rules:

“I checked in online the day before an Alaska Airlines flight. A long security line meant I arrived at the gate about 15-20 minutes prior to the scheduled departure. The gate was still open, but they refused to let me on the plane, and said my seat had already been given away to someone else. Should I have been allowed to board?”

Missing your flight is a pretty unpleasant way to start (or end) a trip, and sooner or later it happens to many of us. Knowing what to do when you miss a flight will help minimize the damage, but you can skip that headache entirely by making sure you reach your gate on time. Of course, “on time” means something different to each airline, which is why the first step to not getting left behind is knowing exactly when you need to show up.

With a few exceptions, American, Delta, United and JetBlue all require that you check in at least 30 minutes prior to scheduled departure on domestic flights, and arrive at your gate no less than 15 minutes prior to scheduled departure. Southwest only lets you check in until 60 minutes before your flight, but gives you extra time at the gate by setting the cutoff at 10 minutes prior to departure. For international flights, you’ll generally need to check in and show up to the gate a bit earlier.

Alaska Airlines is a bit more demanding, as Jenny learned the hard way. You must be checked in for most domestic flights at least 40 minutes in advance, and you must be at the gate with a valid boarding pass at least 30 minutes prior to departure. If you miss the cutoff, your entire reservation may be forfeit, and you won’t be eligible for denied boarding compensation.

One problem with these rules is that they aren’t applied consistently. Most frequent flyers can tell you a story about sprinting to the gate and stepping onto the jetway just before the door closed. On the other hand, if your flight is overbooked and you show up 10 minutes late, you may already be out of luck. Your seat will often have been given away by that point unless the gate agent knows you’re coming (for example, if you’re on a tight connection and staff from your previous flight have radioed ahead).

Alaska Airlines Students Invited for Delivery Flight
Make sure to arrive at your gate at least 30 minutes prior to an Alaska Airlines flight.

Unfortunately for Jenny, Alaska was within its rights to give her seat away. If you find yourself in a similar situation, it’s important to remember that the airline doesn’t really owe you anything. That said, if you’re well-behaved and you have a decent reason for being late, a sympathetic gate agent should be willing to help you out. You might have to pay a change fee or make up the fare difference to be put on a later flight, but that beats having to buy a new ticket outright.

If you often find yourself running late at the airport, you should look into expedited security options like Global Entry, which can help trim the time you spend in line. On a similar note, most airlines offer mobile apps that you can use to check in and keep tabs on your flight schedule. Finally, you might consider just leaving for the airport a bit earlier, especially if you have a comfortable spot to hang out.

If you have any other questions, please tweet me @thepointsguy, message me on Facebook or send me an email at

Chase Sapphire Preferred® Card

With great transfer partners like United and Hyatt, 2x points on travel & dining and a 50,000 point sign up bonus, the Chase Sapphire Preferred is a great card for those looking to get into the points and miles game.

Apply Now
More Things to Know
  • Earn 50,000 bonus points after you spend $4,000 on purchases in the first 3 months from account opening. That's $625 toward travel when you redeem through Chase Ultimate Rewards®
  • Named Best Credit Card for Flexible Travel Redemption - Kiplinger's Personal Finance, July 2016
  • 2X points on travel and dining at restaurants worldwide & 1 point per dollar spent on all other purchases.
  • Earn 5,000 bonus points after you add the first authorized user and make a purchase in the first 3 months from account opening
  • No foreign transaction fees
  • 1:1 point transfer to leading airline and hotel loyalty programs
  • Get 25% more value when you redeem for airfare, hotels, car rentals and cruises through Chase Ultimate Rewards. For example, 50,000 points are worth $625 toward travel
  • No blackout dates or travel restrictions - as long as there's a seat on the flight, you can book it through Chase Ultimate Rewards
Intro APR on Purchases
Regular APR
16.49% - 23.49% Variable
Annual Fee
Introductory Annual Fee of $0 the first year, then $95
Balance Transfer Fee
Recommended Credit
Excellent Credit

Editorial Disclaimer: Opinions expressed here are author’s alone, not those of any bank, credit card issuer, airlines or hotel chain, and have not been reviewed, approved or otherwise endorsed by any of these entities.

Disclaimer: The responses below are not provided or commissioned by the bank advertiser. Responses have not been reviewed, approved or otherwise endorsed by the bank advertiser. It is not the bank advertiser’s responsibility to ensure all posts and/or questions are answered.