Can I use Delta companion ticket one way?

Related questions

1. Is KLM a good airline to fly with?
2. Is there WIFI on Air France international flights?
3. Does KLM fly to Ireland?
4. Which airlines are partners with Air France?
5. Does Air France offer WIFI on international flights?
6. Why is KLM called KLM?
7. Does Air France serve food on international flights?
8. Can you select seats on KLM?
9. Does KLM fly to Australia?
10. Is alcohol free on KLM?

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