If your passport expires while you are traveling, you may not be able to continue international travel or board return flights until you obtain a valid passport. Airlines and border authorities require a valid passport for international movement.
Entry into or exit from the United States depends on having valid travel documents at the time of inspection.
What happens
If your passport expires during your trip:
- You may still remain in the United States if you were already admitted.
- You cannot use an expired passport to board an international flight.
- Airlines will deny boarding without a valid passport, including situations where airline staff deny boarding due to documents that do not meet requirements.
If you attempt to travel onward to another country:
- Entry may be denied based on passport validity rules.
To continue travel, you must contact your country’s embassy or consulate, including situations where an emergency travel document issued by embassies in the United States is required.
What determines the outcome
The outcome depends on:
- Your current location (inside or outside the United States).
- Your nationality and embassy processing options.
- Whether you have proof of identity.
- Your travel timeline and urgency.
Airlines and border authorities check passport validity before allowing travel.
What it may lead to
Common outcome:
- Replacement or emergency passport issued.
- Travel resumed after delay.
Possible escalation:
- Missed flights requiring rebooking, similar to situations involving a missed connection in the United States due to travel disruptions.
- Additional costs for accommodation and travel changes.
Worst realistic outcome:
- Extended delay if embassy processing takes time.
- Inability to board flights until documentation is resolved.
- Additional visa requirements if traveling onward to another country.
Passport expiration does not automatically cancel your U.S. admission status while you remain in the country.
Common escalation triggers
- Discovering passport expiration shortly before departure.
- Lack of identification needed for replacement.
- Limited embassy services in certain locations.
- Attempting international travel without verifying passport validity.
What this depends on
Outcomes vary based on:
- Embassy processing time.
- Availability of emergency travel documents.
- Airline boarding requirements.
- Destination country entry rules.
Passport validity requirements differ between countries.
Who controls the process
Passport issuance is handled by your home country’s government through embassies or consulates.
Airlines enforce document validity at boarding.
U.S. authorities do not issue foreign passports.
Last reviewed: April 2026
This page describes typical operational outcomes. Individual cases vary.